WordWeight : Weighing the Words

Pronunciation : Rou*lette"
Part of Speech : n.
Etymology : [F., properly, a little wheel or ball. See Rouleau, Roll.]
Definition : 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.
Source : Webster's Unabridged Dictionary, 1913