Zane | May 12, 2023 | Updated on: April 15th, 2025
Online Roulette is one of the most exciting casino games. However, its special terms and betting language can be confusing for beginners. Whether you’re new to the game or looking to master advanced strategies, understanding these roulette terms will help you play more confidently.
This Roulette Glossary covers all key terms, from basic bets to expert strategies, so you can play like a pro.
💡 New to roulette? Learn the basics in How to Play Roulette.
🎯 Want to master betting techniques? Check out our Roulette Strategy guide.
🎡 Roulette Terms & Definitions: A-Z Guide
A
American Roulette – A roulette variant with two zero pockets (0 & 00), increasing the house edge to 5.26%.
Announced Bets (Called Bets) – Special bets in French & European Roulette, where players announce their bets before placing chips on the table.
B
Bankroll – The total amount of money a player has set aside for roulette betting.
Betting Limits – The minimum and maximum stakes allowed at a roulette table.
Black Bet – A bet that the ball will land on a black-numbered pocket (pays 1:1).
Block Betting – Betting on multiple adjacent numbers to cover a section of the wheel.
C
Croupier – The casino dealer who spins the roulette wheel and announces the results.
Column Bet – A bet covering an entire vertical column of 12 numbers on the table (pays 2:1).
Corner Bet (Square Bet) – A bet covering four numbers in a square formation (pays 8:1).
📌 Want to learn how to place these bets? Read our How to Play Roulette guide!
D
Double Zero (00) – The extra zero pocket in American Roulette, increasing the house edge.
Dozen Bet – A bet covering 12 numbers (1-12, 13-24, or 25-36) with a 2:1 payout.
Dynamic Roulette – A special online roulette version that speeds up gameplay.
E
En Prison Rule – A rule in French Roulette where an even-money bet is “locked” if the ball lands on 0. The bet is held for the next spin instead of being lost.
European Roulette – A roulette variant with one zero (0) pocket, giving it a lower house edge (2.7%) than American Roulette.
📌 Curious about the best roulette variant for you? Compare them in our Roulette Strategy guide.
F
Fibonacci System – A roulette betting strategy based on the Fibonacci sequence (1, 1, 2, 3, 5, 8, etc.), increasing bets after losses.
Five-Number Bet (Top Line Bet) – A high-risk bet in American Roulette covering 0, 00, 1, 2, and 3 (pays 6:1 but has a high house edge).
French Roulette – A roulette variant with the best odds (house edge of 1.35%) thanks to special rules like La Partage and En Prison.
H
High Bet – A bet on numbers 19-36 (pays 1:1).
Hot Numbers – Numbers that have recently hit more frequently than others.
📌 Want to bet smart? Check out our Roulette Strategy guide for expert betting tips!
L
La Partage Rule – A French Roulette rule where players get half their bet back if an even-money bet lands on 0. Reduces the house edge to 1.35%.
Live Dealer Roulette – A real-time online roulette game where players bet via a live-streamed human dealer instead of a computer-generated RNG game.
Low Bet – A bet on numbers 1-18 (pays 1:1).
M
Martingale System – A betting strategy where you double your bet after every loss, aiming to recover losses when you win.
Mini Roulette – A smaller version of roulette with only 13 numbers (0-12).
📌 Want to test betting systems? Learn more in Roulette Strategy.
O
Odds Bet (Odd/Even Bet) – A bet on whether the ball will land on an odd or even number (pays 1:1).
Outside Bets – Bets placed outside the number grid on broader categories like Red/Black, Odd/Even, or High/Low.
Orphelins (Orphans Bet) – A French Roulette announced bet covering the orphaned numbers (1, 6, 9, 14, 17, 20, 31, 34).
P
Pass Line Bet – A commonly mistaken term from craps—does not apply to roulette.
Pocket – The slots on the roulette wheel where the ball lands.
Progressive Betting – A strategy where players increase or decrease bets based on previous results (e.g., Martingale, Fibonacci).
R
Random Number Generator (RNG) – The software used in online roulette to ensure fair, random results.
Red Bet – A bet that the ball will land on a red-numbered pocket (pays 1:1).
Roulette Wheel Bias – A rare situation in land-based roulette where a physical defect in the wheel causes certain numbers to hit more often. Does NOT apply to online roulette.
S
Single Zero (0) – The only zero pocket in European and French Roulette, giving these variants better odds than American Roulette.
Split Bet – A bet covering two adjacent numbers (pays 17:1).
Street Bet – A bet on three consecutive numbers in a row (pays 11:1).
T
Table Limits – The minimum and maximum bets allowed at a roulette table.
Tiers du Cylindre (Thirds of the Wheel) – A French Roulette announced bet covering numbers 27-33.
📌 Want to play strategically? Learn how to maximize payouts in our Roulette Strategy guide!
🚀 Master Roulette Like a Pro!
✔ Learn the game rules in How to Play Roulette.
✔ Use expert betting strategies from Roulette Strategy.
✔ Bet smart & improve your odds with this glossary.
🎡 Now that you know the terms, it’s time to play smarter! Apply these expert tips and spin to win! 💰🔥