Online Roulette Glossary
Last Updated
:
May 13, 2026, 9:35 PM EDT
When it comes to online casino games, roulette is one of the easiest to play. Bets are pretty straightforward and table layouts are generally the same. You'll want to take some time to learn about the possible placements for your wagers. Then you can begin to understand the odds and payouts.
Knowing the terminology and odds will help you to become a better roulette player.
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📖 What is Roulette Glossary
Roulette has been a beloved casino game for centuries and remains just as popular in online casinos as it is in physical venues. To play confidently, it's important to understand key roulette terms, whether distinguishing between “inside bets” and “outside bets” or knowing the differences between American and European roulette wheels.
This glossary will walk you through essential roulette terminology and also recommend trusted online casinos where you can apply your newfound knowledge.
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📚 Roulette Terms A-Z
Whether you're just learning how to play online roulette, or consider yourself a high roller, it's important to fully understand roulette terminology. Mastering roulette terminology can significantly improve your chances of winning in online Roulette. This extensive A-Z guide covers all the key terms you'll encounter at the table, equipping you with the knowledge to play confidently and strategically.
📕 A-F
| 📜 Term | 📖 Definition |
|---|---|
| 🎬 Action | The amount of money you plan to wager in any given session. It may also refer to bets in play on the table. |
| 🇺🇸 American Roulette (American Wheel) | A version of roulette with 38 numbered slots. That gives it a house edge of over 5%. The spinning wheel contains red and black numbers from 1 to 36, plus 0 and 00 marked in green. |
| 🔄 Backtrack/Ball-Track | This is the outer rim of the roulette wheel where the ball gets spun each round. |
| 🧺 Basket Bet | A three-number wager in American Roulette on 0-1-2, 0-00-2, or 00-2-3. |
| ⚫ Black Bet | An outside bet that the next number will be black. This bet pays 1 to 1. |
| 🔻 Bottom Track | The inner part of the roulette wheel where the ball falls before it lands in a numbered slot. |
| ➕ Carre | French word for a corner bet. (See: Corner Bet.) |
| 🏓 Choppy Game | The player and casino go back and forth between winning without any streaks. |
| 📊 Column Bet | An outside bet on one of the three 12-numbered columns (1st, 2nd, and 3rd). If any one of those 12 numbers hit, you'll win. This bet pays 2 to 1. |
| 🔀 Combination Bet | A bet on any combination of two or more numbers at one time. |
| 🔲 Corner Bet | An inside bet on four numbers at once. Place your bet at any intersection of four numbers. If any of those four numbers hit, you'll win. This bet pays 8 to 1. |
| 🔢 Dozen Bet | An outside bet on 12 numbers at once. Options include: 1-12, 13-24, and 25-36. This bet pays 2 to 1. |
| 0️⃣0️⃣ Double Zero | The numbered slot of 00 on an American Roulette wheel. |
| 🔄 Double-Up Betting | Betting strategy where you double your previous wager after a loss. |
| 🎯 En Plein | French term for a Straight Up Bet. |
| 🇪🇺 European Roulette (European Wheel) | A version of roulette with 37 numbered slots. The house edge is under 3%. The spinning wheel contains red and black numbers from 1 to 36, plus a 0 marked in green. |
| 🟰 Even Bet | An outside bet that the next number will be even. This bet pays 1 to 1. |
| ⚖️ Even Money | Any wager with 1 to 1 odds. (Black/Red, Even/Odd, High/Low.) |
| ⬆️ Fibonacci Betting System | The same as Double-Up. A betting strategy whereby you increase your bet amount after a loss. |
| 5️⃣ Five-Number Bet | A wager on 0-00-1-2-3 in American Roulette. Also known as a Top-Line Bet. This bet pays 6 to 1. (Sometimes referred to as the worst bet on the American Wheel.) |
📗 G-M
| 📜 Term | 📖 Definition |
|---|---|
| 🔥 Golden Numbers | Numbers that keep on winning within a short timeframe. |
| 🤔 Gambler's Fallacy | The mistaken belief that previous turns can influence the upcoming turn. For example, because 10 hasn't spun recently, it's bound to land soon. |
| 🔼 High Bet | An outside bet on the high numbers (19-36) that pays even money. |
| 🏠 House Edge | The advantage the casino has over the player on a percentage basis. Learn more about house edge & RTP. |
| 🔢 Impair | French word for Odd Bet. |
| 🎯 Inside Bet | Any wager on the numbers inside the box of a roulette table layout. These bets offer the highest payouts. Some casinos might offer smaller wager limits for inside bets. |
| 💠 Jeton | The French term used in roulette to refer to a “chip.” |
| 💸 John | In land-based casinos, this term refers to a player who is known for tipping generously. |
| 📐 Layout | The design of the table. Depending on the roulette game you choose, the layout may be different. |
| 6️⃣ Line Bet | A six-number inside bet on any two rows of three numbers. This bet pays 5 to 1. |
| 🔽 Low Bet | An outside bet on the low numbers (1-18). This bet pays even money. |
| 🔽 Manque | French word for Low Bet. |
| 📈 Martingale Betting System | A strategy akin to Double-Up and Fibonacci betting systems. You increase your bet amounts after a loss. |
📘 N-R
| 📜 Term | 📖 Definition |
|---|---|
| 📉 Negative Progression | Increasing your bets after a loss. |
| ⚫️ Noir | French term for Black Bet. |
| 🔢 Odd Bet | An outside bet that the next number will be odd. Pays even money. |
| 🌀 Orphans | A bet on 6, 17, and 34. These numbers are next to each other on the European spinning wheel but far apart on the table layout. |
| 🔲 Outside Bets | Any bets outside the individual box numbers. (Black/Red, Column, Dozen, Even/Odd, High/Low.) These bets pay 2 to 1 and even money. They offer the best chances to win. |
| ⚖️ Pair | French word for Even Bet. |
| 🔝 Parlay | To double your wager amount after a win. |
| 🔼 Passe | French word for High Bet. |
| 🔸 Pockets | Small areas on the spinning wheel where the ball might land for each number. |
| 📈 Positive Progression | Increasing your bets after a win. |
| 4️⃣ Quarter Bet | Another way of referring to a bet on four inside numbers at once. (Corner, Square.) |
| 💵 Quarters | This term typically refers to green chips valued at $25. |
| 🔴 Red Bet | An outside bet that the next number will turn out red. Pays even money. |
| 🇫🇷 Rouge | French word for Red Bet. |
| 🔥 Run | Also called a "streak," this term refers to consecutive outcomes occurring one after another, such as landing six blacks in a row. |
📙 S-Z
| 📜 Term | 📖 Definition |
|---|---|
| 🔗 Section Slicing | Betting strategy based on whatever section of the wheel keeps winning. |
| 6️⃣ Six Line Bet | Another way of referring to a Line Bet. Betting on two adjacent rows of three numbers at once. |
| ✂️ Split Bet | An inside bet on two adjacent numbers at once. This bet pays 17 to 1. |
| 🎯 Straight Bet | An inside bet on one number that pays 35 to 1 -- the best payout in the game. |
| 🚦 Street Bet | An inside bet on one row of three numbers. The wager gets placed at the bottom of the row. This bet pays 11 to 1. (Combination of two Street Bets equals a Line Bet or Six Line Bet.) |
| 📐 Table Layout | May refer to American, European, or French roulette. A Classic Roulette option may also be available. |
| 📊 Tracking Board | Board that shows the latest result along with the previous ten. |
| ➖ Transversale | French word for Street Bet. |
| 🔺 Trio Bet | Another way of referring to a Street Bet. |
| 👀 Visual Wheel Tracking | Refers to players who observe the ball and wheel closely to predict where the ball will land. |
| 0️⃣ Voisins du Zero | French term used in European and French Roulette variants to describe the neighbors of 0, covering numbers 22 to 25 clockwise. |
| 🔄 Wheel | The roulette spinning wheel. |
| ⏱️ Wheel Clocking | Technique used to track outcomes of a specific roulette wheel to identify a pattern or bias. |
| 0️⃣ Zero | The 0 pocket marked in green on the roulette wheel. |
Looking to learn about poker-specific terms? Then check out our poker glossary instead!
🌎 Online Casino Gaming Legal States
We suggest checking our online casino legalization tracker to confirm whether casino gaming is legal in your state. Understanding roulette odds is vital for increasing your winning chances. Read the T&Cs before placing bets.
❓ Online Roulette Glossary FAQ
Below, we address the most important questions about online roulette terms.
Online roulette is only legal in a handful of states, including New Jersey, Michigan, Pennsylvania, Connecticut and West Virginia.
Yes, if you're in a state with legal online casinos.
Some of the key roulette terms to know include 'inside bet', 'outside bet', 'straight-up', and 'split bet'. For a full list, please refer to our table in the 'Roulette Terms' section atop this page.
The house edge is the mathematical advantage that the casino holds over players. In roulette, this advantage varies depending on the version of the game, such as American or European roulette.
The Martingale System is a betting strategy where you double your wager after each loss, aiming to recover previous losses and secure a profit once you win.