Roulette \Rou*lette"\, n. [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.) 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.
Source: Webster's Revised Unabridged Dictionary (1913)
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