roulette

不可数

A noun referring to a gambling game where players bet on the outcome of a spinning wheel, or a tool or geometric concept involving a rolling or rotating motion.

• 🇨🇳名词，指一种赌博游戏，玩家对轮盘旋转的结果下注；也指与滚动或旋转运动有关的工具或几何概念。

1. Gambling game B1 formal

   A gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in.

   • He lost all his money playing roulette at the casino.
   • Roulette is a game of pure chance.
   • She placed a bet on red in the roulette game.

   🇨🇳轮盘赌

2. Perforating wheel C1 formal

   A wheel with teeth used for making a row of perforations, for example in paper or stamps.

   • The printer uses a roulette to create perforations in the paper.
   • Stamp collectors use a roulette to separate sheets.
   • The machine's roulette wheel made precise holes.

   🇨🇳穿孔轮

3. Mathematical curve C2 formal technical

   A line generated by a point on one figure rolling around a second figure.

   • The cycloid is a type of roulette curve.
   • Mathematicians study roulettes in geometry.
   • The path traced by a point on a rolling circle is a roulette.

   🇨🇳旋轮线

• roulettes plural form
• roulettes' possessive plural form
• roulette's possessive singular form