Casino Glossary: The Casino Terms Players Need to Know

A casino glossary turns the shorthand of blackjack tables, roulette layouts, baccarat shoes and slot reels into plain English. When a dealer mentions a hole card, a game’s help screen lists its volatility or a craps player shouts “yo”, the meaning is rarely obvious the first time you hear it. The definitions below explain each word in the setting where you are most likely to meet it, so you can follow the action and make decisions with a clear head instead of a guess.

Rather than one long alphabetical list, the entries are grouped by game. Blackjack has by far the deepest vocabulary, largely because of decades of card-counting books and the countermeasures casinos developed in response, so it gets the most space. Roulette, baccarat, poker, craps and slots follow, then a section on the money and betting language that applies everywhere. The final part covers the other common meaning of “casino terms”: the rules written into an online casino’s terms and conditions. Complete newcomers may prefer to begin with our beginner’s guide, while the casino games hub explains how each game works from the first bet onwards.

How to read the casino glossary

The casino glossary is sorted by game, so start with the game you plan to play, then move to the shared vocabulary. Like any casino dictionary, it works best as a reference you dip into rather than a text you read from start to finish. That game-first order matters because many words change meaning from one game to the next. “Action” in poker describes whatever is happening in the current betting round, yet baccarat players use the same word for the total amount staked over a session or for one particular bet. “Hit” means asking for another card at the blackjack table, but on a slot it describes any winning combination. “Natural” is a two-card 21 in blackjack, a two-card eight or nine in baccarat and a 7 or 11 on the come-out roll in craps.

When a term belongs to several games, it sits under the game where it matters most, with a short note about its other uses. Abbreviations such as DAS, H17, CSM and RTP are spelled out the first time they appear. Many entries also carry figures, including payout ratios, house edge percentages and chip values. Treat those as standard reference points rather than guarantees: the precise rules of a particular table or game can differ, and the placard on the table or the game’s help screen always has the final word.

Some slang survives mainly in land-based venues, particularly American ones, while other expressions were born online. Both kinds are included, because live dealer studios and online lobbies borrow heavily from the vocabulary of physical gaming floors. Knowing where a word comes from often explains why it is used, and that context makes casino jargon far easier to remember the next time it appears on screen.

Blackjack terms

Blackjack terms cover hand values, seating, player decisions, rule variants, side bets and the large vocabulary of card counting. The name of the game doubles as the name of its best hand: an Ace together with a ten or a picture card, worth 21 on the first two cards. A player who lands one is normally paid at 3:2, and a dealer who lands one beats every player hand except another blackjack. The groups below break the rest of the language into manageable pieces. For full rules and strategy rather than definitions, read our blackjack guide.

Hand values and card names

Every card in blackjack carries a fixed value apart from the Ace, which counts as 1 or 11, whichever suits the hand better. Jacks, Queens and Kings are face cards worth 10 each, exactly like the tens. Plenty of regulars call any ten-value card a “monkey” and will happily shout for one when they need it.

Term	Meaning
Hard hand	A hand without an Ace, or one in which the Ace can only count as 1. A ten and a seven make a hard 17; a ten, a five and an Ace make a hard 16, because counting that Ace as 11 would take the hand past 21.
Hard total	The value of a hand when every Ace in it is counted as 1.
Soft hand	A hand in which an Ace can still count as 11 without going over 21, such as an Ace and a six, known as soft 17.
Natural	A 21 made with the first two cards, also called a natural 21; it is simply another name for blackjack and usually pays 3:2.
Bust	Going over 21, which loses the hand immediately.
Bust card	The single card that pushes either the player’s or the dealer’s hand over 21.
Charlie	A house rule that awards an automatic win to a player who collects a set number of cards without busting, commonly five, six or seven; “Six Card Charlie” is one familiar version.
Hole card	The dealer’s face-down card from the opening deal.
Upcard	The dealer’s face-up card, which guides most player decisions.
Monkey	Slang for any card worth 10.

The difference between hard and soft hands is more than a technicality. A soft hand cannot bust with one more card, so it can be played more aggressively, whereas a hard 16 is one of the weakest totals in the game. Recognising which kind of hand you hold is the first step in applying any strategy chart, and it is the reason most charts list soft and hard totals separately.

Seats, boxes and the people at the table

Blackjack seating and equipment come with names of their own. Each player bets in a box marked on the felt directly in front of their seat. The seat on the dealer’s far left is called first base, and whoever sits there receives the first card of every round. At the other end of the table the anchorman, also known as third base, sits nearest the dealer’s right and is the last player to act before the dealer reveals the hole card. Because of that timing, the anchor is often blamed, quite unfairly, for “taking the dealer’s bust card”.

The dealer runs the whole game: dealing, settling bets and applying the house rules. After the shuffle, a player is usually invited to cut the cards, splitting the deck before play begins. The dealer then inserts a plastic cut card to mark how far into the shoe the game will go before the next shuffle. Before the first hand, one card is normally taken off the top and placed aside face down. This burn card exists so that nobody, including the first player, can know which card will be dealt first.

Cards that have already been played are discards. They collect in a discard tray on the table until the shoe, the box that holds the decks and speeds up dealing, runs down far enough for a reshuffle, after which the discards go back into play. A standard deck has 52 cards, and most modern games are multi-deck, typically using six to eight decks at once. Some venues shuffle continuously by machine instead, as explained in the section on casino countermeasures below.

A round runs from the moment bets are placed on an empty table until every hand has been played out and every bet settled. Two pieces of slang describe the players themselves. A whale is a high-limit player whose stakes dwarf everyone else’s. “Ploppy”, coined by gambling writer Frank Scoblete, is a mocking name for someone who plays blackjack very badly. Neither word appears on a rules card, yet both are heard at tables everywhere. Players who bet heavily may also find our page on high roller casinos useful.

Player decisions and rule variations

Player decisions in blackjack are few, but each one has a precise name and each table sets its own limits on them. To hit, or draw, is to take another card; to stand is to keep your current total. Doubling down means doubling your original stake in return for exactly one more card. Splitting turns a pair into two separate hands, each carrying its own bet. Surrender lets you give up a weak hand and get half of your stake back. In rule summaries and on table placards these options and their restrictions are often written as abbreviations.

Abbreviation or term	Meaning
DAS	Double After Split: you may double down on a hand created by splitting a pair.
NDAS	No Double After Split: doubling is not allowed once a pair has been split.
DA2	Double on Any Two: you may double down on any first two cards.
D9	Doubling is restricted to starting totals of nine, ten or eleven.
Resplit	Splitting again when one of your split hands receives another card of the same rank.
RSA	Resplit Aces: split Aces may be split a second time.
H17	Hit 17: the dealer must take a card on a soft 17.
S17	Stand 17: the dealer stands on every 17, soft or hard.
Dealer peek	With an Ace or a ten-value upcard, the dealer checks the hole card for blackjack before players act.
No hole card	A European convention in which the dealer’s second card is not drawn until all players have finished their hands.
Early surrender	Giving up half your stake before the dealer checks for blackjack.
Late surrender	Giving up half your stake after the dealer has checked for blackjack; no further decisions follow.
Insurance	A side bet offered only when the dealer shows an Ace, paying 2:1 if the dealer has blackjack.
Even money	With a blackjack against a dealer Ace, you can take a 1:1 payout straight away instead of risking a tie.

Small rule differences add up over many hands. A table where the dealer stands on soft 17 and doubling after a split is allowed is generally kinder to the player than one where neither applies, which is why experienced players read the placard before they buy in. Basic strategy is the name for the mathematically best decision in every situation, based on your own cards and the dealer’s upcard. It is usually presented as a chart, needs no counting and simply removes the guesswork from each hit, stand, double or split.

Blackjack side bets

Blackjack side bets are optional extra wagers placed next to the main bet, and their results are independent of whether the main hand wins. In almost every game the main bet must be placed first, and most side bets settle as soon as the relevant cards are on the table.

Side bet	How it wins
21+3	Your first two cards and the dealer’s upcard are read as a three-card poker hand, such as a flush or three of a kind.
Bet Behind	Lets you back another player’s hand, which is popular at full live dealer tables when no seat is free.
Bust It	Also called Buster or Bust Bonus; wins when the dealer busts using three or more cards.
Crazy 7	Pays when your opening cards are sevens, with three suited sevens the top result.
Dealer Pair	Pays when the dealer’s first two cards form a pair, with mixed, colour and suited pairs paying different amounts.
Hot 3	A side bet in Evolution’s Infinite Blackjack that combines your two cards with the dealer’s upcard and pays on strong totals such as 19 or 21.
Lucky Lucky	Uses your two cards and the dealer’s upcard; different three-card combinations, such as suited sevens or a total of 19, carry different payouts.

Each side bet comes with its own pay table and its own house edge, separate from those of the main game. Treat them as an optional extra rather than a strategy, and check the help screen for the exact payouts before you add one to your hand.

Card counting vocabulary

Card counting means tracking the cards already dealt to judge whether those still to come favour the player. Nobody memorises every card; each one simply receives a small tag value and the player keeps a running total in their head. Counting is a mental skill rather than cheating, but casinos can still decline the custom of anyone they suspect of doing it, which is why so much blackjack slang concerns countermeasures.

Term	Meaning
Advantage	The statistical edge in a game, shown as a percentage of the stake. In blackjack it normally belongs to the casino, but counting can shift it towards the player.
Advantage player	Someone who uses a legitimate method to gain a mathematical edge over the house.
Hi-Lo	One of the most widely used counting systems; low cards get a positive tag, high cards a negative tag and middle cards zero.
Running count	The live total of all tags since the last shuffle, which can be positive or negative.
True count	The running count adjusted for the number of decks still to be dealt; most counters size their bets on this figure.
Balanced count	A system whose positive and negative tags cancel out, so counting a complete deck brings you back to zero.
Level	How many different values a system assigns to cards. Level 2 and level 3 systems are more accurate but harder to use, and level 4 and level 5 systems also exist.
10 Count	A counting approach that follows the ten-value cards; the higher the count climbs, the more likely a ten becomes.
Ace rich	A shoe that has dealt few or no Aces so far, leaving more of them than usual in the remaining cards.
Index	The true count at which a player departs from basic strategy, read from a deviations chart that differs between H17 and S17 games.
Bet correlation	How closely a system’s tags reflect the real effect of removing each card, which shows how well it identifies good moments to bet big.
Insurance correlation	How well a system’s tags predict when the insurance bet is worth taking.
Deck penetration	The share of cards dealt from a deck or shoe before reshuffling; the deeper it goes, the more useful counting becomes.
Bet spread	The range between a player’s smallest and largest bet; a 1-5 spread means staking between one and five units per hand.
Back counting	Following the count from behind the table as a spectator and joining only when it turns favourable.
Wonging	Another name for back counting, describing the habit of betting only when you hold the edge.
Big Player	The team member who places large bets once teammates, known as spotters, signal a strong count.
N0	Pronounced “N-zero”; the number of rounds a counter would need before their expected profit equals one standard deviation of results.
Risk of ruin	The mathematical probability of losing your entire bankroll.

All of these ideas depend on playing deep into a shoe. Online blackjack run by a random number generator normally reshuffles before every hand, so counting has no practical effect there, and many live tables use continuous shuffling or shallow penetration for the same reason. The terms remain useful, though, because they explain why tables are set up the way they are.

Casino countermeasures and table slang

Casinos respond to skilled players with a graduated set of measures, each with its own name. The mildest is the back-off, when staff ask a player to stop playing blackjack or to limit their stakes. It is not a ban, but it is often the first step towards one. Being “86’d” is more serious: the player is told to leave the premises altogether. Anyone who has been 86’d and keeps coming back may be barred permanently, a fate most often reserved for known card counters. Many venues also keep a black book, a list of people they have excluded from their tables.

Technology does the rest. A CSM, short for Continuous Shuffling Machine, feeds discarded cards back into the stack after each round, so there is never a deep shoe to read and counting loses its point. Players also talk about a “cold deck” when a shoe keeps producing poor cards and heavy losses, although the phrase describes a feeling rather than anything a player can measure.

Several terms describe how players adjust their chips. To chip up is to raise your stake compared with the previous hand, and to chip down is to lower it. A flat bet is the same amount on every hand, no matter what happened before. Colouring up means asking the dealer to swap a pile of small chips for fewer, higher-value ones, usually when leaving the table; the higher denominations tend to be the more colourful chips, which is where the phrase comes from.

Casino chip colours

Casino chip colours follow conventions found in many land-based venues, particularly in the United States, though each casino is free to set its own scheme. The values below are the ones most often linked with each colour, shown in US dollars because that is where the conventions grew up.

Chip colour	Typical value (US$)
Pink	2.50
Red	5
Green	25
Black	100
Yellow, orange or “pumpkin”	1,000
Brown or “chocolate”	5,000

Online and live dealer games print the value on each digital chip, so colour matters far less there. Roulette is the main exception on a physical floor: roulette chips are generally unmarked, each player receives a single colour so their bets can be told apart, and the value of that colour is fixed when the player buys in.

Roulette terms

Roulette terms describe the wheel variants, the bets available on the layout and the special rules that change the house edge. The most important difference is the number of zero pockets on the wheel, because every extra zero increases the casino’s advantage. Our roulette guide shows how these terms fit together in a full game.

Wheel variants and special rules

Roulette wheels come in a handful of standard formats, and the name on the lobby tile tells you which one you are about to play.

Variant	What sets it apart
American Roulette	Two zero pockets, 0 and 00, alongside the numbers 1 to 36; the extra pocket gives the house a bigger advantage than in European roulette.
Single Zero Roulette	A wheel with only one zero pocket, also known as European roulette.
French Roulette	Single-zero roulette that adds the La Partage and En Prison rules for even-money bets.
Mini Roulette	A smaller wheel with just 13 pockets, numbered 0 to 12.
Lightning Roulette	A live version that picks random Lucky Numbers each round and attaches multipliers of 50x, 100x, 200x, 300x, 400x or 500x to them.

The zero pockets on a wheel are coloured green and are therefore known as the green pockets. La Partage is a French rule that applies when the ball lands in zero: even-money bets are not lost outright but split in two, and half of the original stake goes back to the player. That rule cuts the house edge on even-money bets to just 1.35 percent. En Prison works in a similar spirit, holding the even-money bet over to the next spin instead of settling it immediately.

Roulette bets and payouts

Roulette bets split into inside bets, placed on the numbers in the grid, and outside bets, placed on larger groups such as high or low. Inside bets are less likely to win but pay more when they do.

Bet	Numbers covered	Payout	Chance of winning
Straight up (single number)	1	35:1	—
Split	2	17:1	—
Street	3	11:1	about 8%
Corner (quarter or square bet)	4	—	—
Line (two rows of three)	6	5:1	about 16%
High or low (1–18 or 19–36)	18	1:1	—

A straight-up bet, also called a single number bet, is the classic all-or-nothing roulette wager. A split covers two numbers that sit next to each other on the table, while a street covers a row of three. The corner bet, which some players call a quarter bet or square bet, covers four numbers that meet at one point. A line bet takes in two adjacent rows of three, six numbers in total. High or low is an even-money wager on either the low half, 1 to 18, or the high half, 19 to 36. A block bet is not a single position at all, but a player’s habit of covering a large section of the layout with many numbers at once.

Call bets are placed on sections of the wheel rather than on the printed layout. Orphans is one of them: it covers the numbers that sit outside the larger named sectors of the wheel, with six, 34 and 17 among them. Because the numbers on the wheel are not arranged in numerical order, these bets look scattered on the layout even though they sit together on the wheel itself.

Roulette also has a small cast of staff and equipment. The marker, sometimes called a dolly, is the device the croupier places on the winning number after each spin so that nobody can add or remove chips from it. At busy tables a second staff member, known as the mucker, gathers and stacks the chips so that the croupier can keep the game moving at peak times.

Baccarat terms

Baccarat terms revolve around three bets, Banker, Player and Tie, and the fixed rules that decide when each hand draws a third card. The game’s name is said to come from its worst possible hand, a total of zero, whether held by the bank or by the player. Our baccarat guide covers how a round plays out in full.

Term	Meaning
Banco	Spanish for “bank”; it refers to the banker’s side, and in some versions players call “banco” to bet against the dealer.
Punto	Derived from “punter”, it describes the Player side; together the two words give Punto Banco its name.
Banker bet	The bet with the lowest house edge in baccarat, with odds close to 1:1.
Player bet	One of the three main bets, with the second-best house edge, also close to 1:1.
Tie	A bet that both hands finish level; it carries the highest house edge but also the biggest payout. Without a tie bet, a tied hand is simply a push.
Push	A result where Player and Banker bets neither win nor lose and stakes are returned.
Standoff	Another name for a tie between the Player and Banker hands.
Natural	A two-card total of 8 or 9, the best hand available at that point in the round.
La Grande	French for “the big one”: a natural 9, the strongest hand in baccarat.
La Petite	“The little one”: a natural 8, the second-best hand.
Table of Play	The set of rules that decides, from each hand’s score, whether a third card is dealt.
Vigorish	The commission the casino takes from the winnings of a successful bet, most often a winning Banker bet.
Layout	The printed table design showing where to bet on Player, Banker or Tie.
Shoe	The dealing box, which at many casinos holds up to eight decks.
Hand	The cards dealt to each side during one round.
Upcard	Any card turned face up during the deal.
Action	The total amount a player stakes during one session, or a single specific bet.

Baccarat variants change the pace and the stakes more than the core rules. Mini baccarat is played at smaller tables, usually seating around seven players, where the game is faster and more relaxed and the limits suit an average bankroll. Baccarat Banque is a French variant in which the banker sits in the middle of the table and plays one hand against two player hands, one on each side. Super Pan Nine, popular in the card rooms of Los Angeles, lets a player rather than the house act as the bank. At the opposite end of the scale, many casinos keep a private area known as the pit, where VIPs and high rollers play baccarat at much higher stakes than on the main floor.

Because the drawing rules are fixed, baccarat has far fewer decisions than blackjack, and most of its vocabulary describes bets and results rather than strategy. The choice that matters is which of the three bets to back, and the house edge on each is the clearest guide.

Poker terms

Poker terms describe betting actions, seat positions and hand strength, and many also appear in casino table games based on poker. Our poker guide puts this vocabulary in the context of a complete hand.

Betting actions

Each turn in poker gives a player a short list of options, and every option has a name that other players will expect you to use.

Term	Meaning
Ante	A small compulsory amount every player puts in at the start of a betting round, whether or not they intend to play the hand.
Bet	Putting chips forward on the strength of your hand.
Check	Passing without betting, allowed only when nobody has bet or raised yet in that round.
Call	Matching the most recent bet; you must be able to call in order to raise.
Raise	Increasing the size of the previous bet.
Check-raise	Checking first, then raising after an opponent bets in the same round.
Fold	Giving up the hand and forfeiting whatever you have already put into the pot.
All-in	Staking every chip you have left on one hand, usually announced with the words “I’m all in”.
Pay off	Calling the final bet even though you suspect your hand is beaten.
Bluff	Betting as if you hold a stronger hand than you do, to persuade opponents to fold.

Positions, blinds and the button

Position in poker decides the order of play, and the button marks it. The button is a token showing which player is in the dealer position for that hand, and it moves round the table after every hand. The small blind is a forced bet posted by the player directly to the dealer’s left, and the big blind is the larger forced bet posted by the next player along, the one sitting in the second position. The player first to act in a betting round is said to be under the gun, a seat that offers the least information about what everyone else intends. “Action” describes whatever is happening in the current round, from raises to folds, and players often say the action is “on you” when it is your turn.

Cards, boards and hand strength

Poker hand vocabulary covers the cards in play and how good your holding is compared with the board.

Term	Meaning
Community cards	Cards dealt face up in the middle of the table for every player to use.
Pre-flop	The first betting round, before any community cards appear.
Flop	The first three community cards, dealt face up together after the opening round of betting.
Turn	The fourth community card, which comes after the flop and before the river, followed by another round of betting.
River	The fifth and final community card, followed by the last betting round before the showdown.
Overcard	A hole card ranked higher than every community card on the table.
Over-pair	A pocket pair higher than any community card.
Bottom pair	A pair made when one of your hole cards matches the lowest card on the board.
Quads	Four of a kind.
Kicker	Also called a side card; the extra card that decides the winner when two hands are otherwise tied.
Off-suited	Cards of different suits; the four suits are spades, hearts, diamonds and clubs.
Nuts	The best possible hand at that point in the game.
Outs	The cards left in the deck that would improve your hand, possibly all the way to the nuts.
Backdoor	A hand completed with the last two cards dealt, often without the player planning it.
Counterfeit	When the community cards fail to improve your hand and make it harder for you to hold the best one.
Play the board	Relying mainly on the community cards because they are stronger than your own.
Free card	A card that arrives without anyone having to put more money in during the betting round.
Foul	A hand the dealer rules unplayable; it cannot win any part of that pot.
Outrun	Drawing a better hand than an opponent; also called outdrawing.
Underdog	The player whose hand is least likely to win based on probability.
Bad beat	A strong hand losing to a weaker one thanks to luck on later cards.

Formats, pots and fees

Poker formats are defined largely by how much you are allowed to bet. In no limit games a player can stake any amount up to everything in front of them, while in pot limit games the largest permitted bet equals the current size of the pot. Omaha is a popular variant in which each player receives four hole cards and must use exactly two of them alongside three of the five community cards. ABC poker describes a straightforward, by-the-book style with few surprises.

The pot is the total of all chips staked in a hand. When a casino or card room hosts the game rather than playing against you, it takes a set share of each pot, called the rake, as payment. Rakeback returns a percentage of that rake to the player, usually as part of a promotion. Folded hands and used cards go into the muck, the discard pile. Players also talk about “hitting the jackpot” when they win a large sum during a session.

Craps terms

Craps terms are tied to the totals two dice can produce, and much of the slang is simply a nickname for a number. Every round starts with the come-out roll. A 7 or 11 on that roll is a natural and wins for pass line bettors, while a 4, 5, 6, 8, 9 or 10 becomes the point, which the shooter then needs to repeat before throwing a 7.

The pass line bet is the backbone of the game. It wins on a natural during the come-out roll, or when the point comes up again before a seven, and its house edge of just 1.41 percent explains its popularity. The stickman is the dealer who returns the dice to the shooter, calls out each result and handles proposition bets, both placing and paying them.

Term	Numbers or meaning
Any Craps	A bet that the next roll is 2, 3 or 12.
Aces	A bet that the next roll is a 2.
Snake eyes	A roll of two ones, totalling 2.
Hi-Lo	A single-roll bet on 2 or 12.
Hi-Low-Yo	A single-roll bet on two, eleven or twelve.
Horn bet	A bet that the next roll is two, three, eleven or twelve.
Field bet	A one-roll bet covering two, three, four, nine, ten, eleven and twelve.
Hard way	A bet on four, six, eight or ten that only wins when both dice show the same number.
Yo (Yo-Eleven)	Slang for 11, used so it is not confused with 7 over the noise of the table.
Little Joe	A point of 4.
Nina	A roll totalling 9.
Inside numbers	The place numbers five, six, eight and nine.

Other wagers depend on timing rather than a single number. A place bet backs a particular number to appear before a 7. A lay bet does the opposite, backing a 7 to arrive before the number. Taking the odds means adding an odds bet behind your line bet once a point is set. Prop bets, short for proposition bets, are single-roll wagers that win or lose on the very next throw, and to parlay is to let a winning stake and its profit ride on the following bet.

A few terms describe the game’s variants and its most memorable moments. Simplified craps strips the game back to its core with no extra side bets. High Point Craps adds a twist in which rolls of 2 and 3 are ignored rather than counted. New York craps is a form of bank craps found in the eastern United States, the Bahamas and England, played on a different table layout with a double-end dealer arrangement. A monster roll is every shooter’s dream: either a roll lasting more than twenty minutes or one during which everyone at the table wins big.

Slot terms

Slot terminology covers reel layouts, ways of winning, stakes, bonus features, jackpots and the numbers that decide long-term returns. Online slots have been around since 1994, and the vocabulary has grown with every new mechanic released since then. Our slots guide covers the main game types these terms describe.

Reels, paylines and ways to win

Reel layouts are the starting point for any slot, and the classic formats still sit alongside the newest releases.

Term	Meaning
3 reel slot	The traditional setup with just three spinning reels.
5 reel slot	Five reels, now standard both online and in land-based venues.
Classic slots	Three-reel, single-payline games, also called retro slots, still widely played online.
One-armed bandit	An old nickname for slot machines, tied to the lever on early models.
Coin slot	A coin-operated machine, a style that is increasingly hard to find.
Video slots	Screen-based slots, usually with five reels and many paylines; the format has dominated since the 1980s, following early machines such as Fortune Coin.
3D video slots	Slots built around advanced graphics, animations and special effects.
Active payline	A line on which your bet is placed; some slots let you choose how many lines to play, while others fix them.
Multi-line	A slot with several paylines, which may be fixed or selectable.
243 ways to win	A format without paylines, where matching symbols pay on adjacent reels without needing a fixed line.
Win-both-ways	A slot that pays combinations from left to right and from right to left.

The move from mechanical reels to video screens changed slot design completely. Once a game no longer needed physical stops, designers could add more reels, more rows and formats such as 243 ways. The earliest online slots were little more than digital copies of land-based machines, but they soon gave way to titles designed for screens from the start, and today the great majority of slot games are available online.

Stakes and spins

Slot stakes are described in a few standard ways, and understanding them stops a spin from costing more than you expected.

Term	Meaning
Line bet	The amount staked on each payline; on a 10-payline slot, a £10 total stake is a £1 line bet.
Denomination	The value of the coins or credits a game uses.
Minimum bet	The smallest stake a game allows, such as one line at the lowest value or the lowest line bet across all lines; it gives the most spins from a fixed budget.
Maximum bet	The largest stake possible, using the top coin value and every active payline.
Autospin	A setting that plays a chosen number of spins at a fixed stake without further clicks.
Hit	Any winning combination on a spin.
Hit and run	Trying a slot for a few spins and moving on if it does not appeal, a habit common in land-based venues.
Hammer a machine	Playing the same slot repeatedly in the hope of a progressive jackpot or a winning streak.
Buy a pay	An older design where the top prizes are only available at a particular stake, so you effectively pay for the right to compete for them.

Features and special symbols

Slot features are extra mechanics that sit on top of the base game and add winning potential.

Term	Meaning
Feature	Any bonus mechanic, from free spins rounds to pick-and-win games, that adds potential winnings.
Wild symbol	A symbol that substitutes for others to complete a winning line, sometimes called a joker.
Wild multiplier	A wild that also multiplies any win it helps to create.
Buy a feature	An option that lets you pay to enter a restricted bonus round directly.
Nudge	A feature that moves a reel by one position, closely linked with UK fruit machines and also found in some online slots.
Skill bonus	A bonus round that asks for some skill, such as a shooting game; rare, because most slots are designed to be open to everyone.
i-Slot	A slot with a storyline bonus game that saves your progress so you can pick up where you left off.

Games that let you buy straight into the bonus are gathered on our bonus buy slots page, while hold and win slots explains a feature format built around locking symbols in place. Bonus rounds triggered by scatters are often called free spins, the same name casinos use for spins handed out as a promotion.

Jackpots and machine hardware

Jackpot slot vocabulary separates fixed prizes from prizes that grow with every bet placed.

Term	Meaning
Progressive jackpot	A prize with no fixed value that grows as a share of each bet is added; the base game RTP is often lower to fund it.
Primary jackpot	The largest prize a slot can pay.
Linked progressive	A jackpot shared by machines across several casinos, growing faster because every linked game feeds it.
Wide Area Progressive (WAP)	A large network of linked slots feeding one pot; payouts are usually larger, and most online progressive jackpot slots belong to this group.
Megabucks	A well-known Las Vegas slot brand with the largest land-based progressive jackpot network.
Signature slots	Slots made exclusively for one casino.
Hopper	The coin reservoir in older land-based machines, used to pay out winnings and rarely seen in modern cabinets.

Online, Mega Moolah holds the Guinness World Record for the largest online slot win, while Megabucks remains the benchmark among land-based jackpots. When a slot is part of a progressive network, every game on that network contributes to the shared prize, which is why networked jackpots tend to be the largest payouts in slot gaming.

RTP, payback and volatility

RTP, short for Return to Player, is the percentage of all money staked on a game that it pays back to players over time. Some players and older machines call the same figure the payback percentage. An RTP is a long-run average across a huge number of spins, not a promise about any single session, so a short run of play can land far above or far below it.

Volatility describes how often a slot produces wins and how large those wins tend to be. A low volatility game pays smaller amounts more often and carries lower risk, while a high volatility game pays less often but can produce much larger wins. Two slots with identical RTPs can feel completely different because of volatility, which is why both numbers are worth checking. Our page on RTP and volatility explained looks at both figures in more depth, and our guides to the best payout slots and high volatility slots put these ideas into practice.

Money and betting vocabulary

Money and betting vocabulary is shared by every casino game, from the bankroll you bring to the systems used to size stakes.

Term	Meaning
Bankroll	The money you have set aside specifically for casino play.
Bet	The amount staked on a spin, hand, roll or any other outcome.
Wager	Another word for a bet placed on a casino game.
Chips	Tokens that represent set amounts of money, with different colours for different values.
Cash out	Ending a session and converting credits or winnings into real money you can withdraw.
House	The casino that hosts the games or tournaments.
House edge	The casino’s built-in expected advantage in a game; in blackjack it is generally around 1%.
Expected value	The average result a bet would produce over a very long run; short sessions rarely match it, but results drift towards it over time.
Win	Any outcome the game’s rules define as a winner, from matching slot symbols to a winning card sequence.
Flat bet	Staking the same amount every time.

Betting systems are rules for changing the size of your stake after a win or a loss. A positive progression raises the stake after a win to make the most of a good run and limit losses when results turn cold; Paroli and Parlay are two well-known examples. A negative progression does the reverse, raising the stake after a loss in an attempt to recover it and lock in small, regular profits. The Fibonacci system is a negative progression that follows its famous number sequence. No system changes the house edge of the underlying game, so they are best seen as ways of organising a bankroll rather than ways of beating the casino.

When it is time to cash out, the process depends on the payment method and the casino’s own checks. Our guide to deposits and withdrawals explains the practical side, the best payout casinos page compares returns across sites, and how online casinos work shows where the house edge fits into the business model.

Casino terms and conditions: the other meaning

Casino terms also means the terms and conditions an online casino attaches to accounts, bonuses and withdrawals, and that vocabulary deserves equal attention. Misreading a bonus rule can cost far more than misreading a roulette bet, because the consequences often only appear when you try to withdraw.

Term	Meaning
Wagering requirement	The number of times bonus funds, or a bonus plus the deposit, must be staked before related winnings can be withdrawn.
Game contribution	The share of each stake that counts towards a wagering requirement; different games can count at different rates.
Maximum bet rule	A cap on the stake allowed per spin or hand while a bonus is active.
Expiry	The period within which a bonus or free spins must be used before they are removed.
Verification (KYC)	“Know your customer” checks on identity, age and address, often completed before a first withdrawal.
Withdrawal limit	The highest amount that can be withdrawn in a set period.

These clauses are where most disputes start, so it pays to read them before accepting any offer. Our guide to wagering requirements explains the most common of these clauses in detail. Our overview of casino bonuses explains how the common offer types work, the page on account verification covers the documents usually requested, and our guide to unfair terms at UK casino sites shows which conditions deserve a second look. If something does go wrong, complaints and disputes sets out the steps to take, and casino licensing explained describes who oversees operators.

Why casino vocabulary matters before you play

Knowing casino vocabulary matters because it lets you read rules, compare games and spot poor conditions before any money is at stake. A player who understands H17, deck penetration or La Partage can tell at a glance which of two similar tables offers better terms. Someone who knows what RTP and volatility mean can choose a slot that suits their budget instead of picking one at random, and anyone who recognises a wagering requirement or a maximum bet rule is far less likely to be caught out by a bonus.

Vocabulary also makes live dealer games more enjoyable. Dealers and fellow players use these words constantly, and following the conversation is part of the experience. Even the slang has a practical side: knowing that a “monkey” is a ten-value card or that “yo” means eleven helps you keep track of what is happening at a fast table.

None of these casino terms changes the odds of a game, and no amount of jargon turns a negative expected value into a positive one. Set a budget before you play, treat any bankroll as money spent on entertainment and stop when that budget runs out. For more background on choosing where to play, see how to choose a casino, and browse our guides for deeper explanations of individual games and features.

Frequently asked questions

What is a casino glossary?

A casino glossary is a reference list explaining the words used in casino games, from blackjack and roulette to slots. It covers rules, bet types, payouts, table slang and abbreviations such as DAS, H17 or RTP, so you can follow the action at a live table or read a game’s help screen without guessing what each term means before you place a stake.

What are casino terms?

Casino terms has two common meanings: the vocabulary of casino games and the terms and conditions online casinos set. The first covers words such as hole card, split bet or volatility. The second covers the rules attached to accounts, bonuses and withdrawals, including wagering requirements, maximum bet rules and identity checks. Both are worth learning before you deposit or accept any offer.

What is a soft 17 in blackjack?

A soft 17 is a blackjack hand totalling 17 that contains an Ace counted as 11, such as an Ace and a six. It cannot bust with one more card, because the Ace can drop to a value of 1. Tables state whether the dealer hits soft 17, written H17, or stands on it, written S17, and a dealer standing is generally better for the player.

What does a back-off mean in a casino?

A back-off is a request from casino staff to stop playing blackjack or to limit your stakes, usually aimed at players suspected of counting cards. It is not a ban in itself, but it is often the first step towards one. A player who keeps returning may be 86’d, meaning told to leave the premises, and can later be barred permanently.

What is the difference between RTP and volatility?

RTP measures how much a slot pays back over time, while volatility measures how often and how big its wins are. RTP is a long-run percentage of all money staked, not a promise for one session. Two games with the same RTP can feel very different: a low volatility slot pays small wins often, whereas a high volatility slot pays rarely but bigger.

Is card counting illegal?

No. Card counting is a mental strategy that tracks which cards have already been dealt, not a form of cheating. Casinos can still refuse to deal to suspected counters, ask them to back off or bar them altogether. Online blackjack run by a random number generator normally reshuffles before every hand, so counting has no practical effect there.

Why does American roulette have a higher house edge?

American roulette has a higher house edge because its wheel adds a second zero pocket, 00, to the usual single zero. The payouts stay the same as on a single-zero wheel, so the extra pocket shifts the odds further towards the casino. French roulette goes the other way: its La Partage rule cuts the edge on even-money bets to 1.35 percent.