roulette | | |
n. (shape) | 1. line roulette, roulette | a line generated by a point on one figure rolling around a second figure. |
| ~ curve, curved shape | the trace of a point whose direction of motion changes. |
| ~ cycloid | a line generated by a point on a circle rolling along a straight line. |
| ~ epicycloid | a line generated by a point on a circle rolling around another circle. |
| ~ hypocycloid | a line generated by a point on a circle that rolls around inside another circle. |
n. (artifact) | 2. roulette, toothed wheel | a wheel with teeth for making a row of perforations. |
| ~ wheel | a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines). |
n. (act) | 3. roulette | a gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in. |
| ~ gambling game, game of chance | a game that involves gambling. |
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