Category:Roulette

Rou*lette", n. Etym: [f., properly, a little wheel or ball. See Rouleau, roll.]

1. A game of chance, in which a small ball is made to move round Rapidly on a circle divided off into numbered red and black spaces, The one on which it stops indicating the result of a variety of Wagers permitted by the game.

2. (fine arts) (a) a small toothed wheel used by engravers to roll over a plate in Order to order to produce rows of dots. (b) a similar wheel used to roughen the surface of a plate, as in Making alterations in a mezzotint.

3. (geom.)

Defn: the curve traced by any point in the plane of a given curve When the latter rolls, without sliding, over another fixed curve. See Cycloid, and epycycloid.