Roulette Glossary: Roulette Terms & Roulette Slang from A to Z
Action: Any Roulette bet or group of bets.
American Roulette Wheel: A wheel that has both a “single-zero” (0) and a “double-zero” (00).
Ball: The small white sphere, made of either ivory or plastic, that rolls around the wheel and falls into a pocket. The Roulette game starts when the ball starts rolling and stops when it lands in a pocket.
Biased Wheel: A wheel that gives certain results more than can be accounted for by probability.
Black Bet: A Roulette bet that wins if the result is a black number. A winning Black Bet pays even money. See also “Red Bet”.
Casino Edge: The average amount that the casino expects to win on every bet placed. In European Roulette, the casino edge is 2.7%. In the American version, the casino edge is 5.26%. Also called “House Edge” or “House Advantage.
Chasing Losses: A series of bets a losing player makes in an attempt to win back his losses. Typically, chasing losses leads to even more and heavier losses.
Column Bet: A Roulette bet that wins if the result falls within a selected column of numbers. A winning Column Bet pays 2 to 1.
Croupier: The “dealer” in a Roulette game. The croupier collects bets and pays off winners.
Double-Zero Wheel: Another name for an American Roulette wheel.
En prison: Also known as the Surrender rule, En Prison is a bet option offered in European versions of the game. Players betting even money (odd/even or red/black) where the spin results in 0 may either lose half their wager or keep the same bet at stake on the next spin.
Even Number Bet: A bet that wins if the winning number is even. A winning Even Number bet pays even money. See also “Odd Number Bet”.
European Wheel: A Roulette wheel that has only a single-zero (0).
Five Number Bet: A bet available only in American Roulette where the player wins if the result is either 0, 00, 1, 2 or 3.
Fibonacci Betting System: A series of Roulette bets that increase according to the Fibonacci sequence (1, 1, 2, 3, 5, 8, 13, 21, etc.).
High Number Bet: A bet that wins if the winning number is between 19 and 36. A winning High Number bet pays even money. See also “Low Number Bet”.
Inside Bet: Any Roulette bets that are placed inside the numbered grid are “inside bets”. Inside bets are placed on numbers between 1 and 36.
Layout: The design of the Roulette table, including betting areas, as well as the wheel itself.
Low Number Bet: A bet that wins if the winning number is between 1 and 18. A winning Low Number bet pays even money. See also “High Number Bet”.
Martingale System: A series of Roulette bets that double every time a player loses.
Odd Number Bet: A bet that wins if the winning number is odd. A winning Odd Number bet pays even money. See also “Even Number Bet”.
Orphans: A system wherein players place bets on numbers that are close together on the actual wheel, but far from each other on the table layout.
Outside Bet: Bets placed outside the Roulette table's numbered grid. These include bets on red, black, high, low, odd, even, and the first, second and third sets of 12 numbers.
Red Bet: A betbet that wins if the result is a red number. A winning Red Bet pays even money. See also “Black Bet”.
Single-Zero Wheel: A European wheel version with only a single zero (0), as opposed to an American wheel that has both a single zero (0) and a double zero (00).
Straight Bet: Bet placed on a single number. A winning straight bet pays 35 to 1. A straight bet is the most common bet in any Roulette game and has the highest payout
Voisins du Zero: French for “neighbors of zero”. The name given to bets placed on numbers near the zero on a European Roulette wheel.
Wheel Tracking: Players who track past results of series of games in order to determine future spins are said to be “tracking” the wheel. Also called “wheel clocking”.
We hope you’ve found the above Roulette glossary helpful. As with any game, learning the Roulette terms and Roulette slang particular to play is crucial. Winning Roulette requires understanding, and you won’t understand if you don’t speak the language.
Use the above Roulette glossary to converse with fellow players, read game outcomes and determine which bets you want to place. We guarantee that knowing Roulette terms will not only improve your win to loss ratio, but will also increase your enjoyment of the game.