roulette

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A gambling game in which the players bet on which slot of a rotating disk a small ball will come to rest in.
• noun A small toothed disk of tempered steel attached to a handle and used to make rows of dots, slits, or perforations, as in engraving or on a sheet of postage stamps.
• noun Any of the short consecutive incisions made between individual stamps in a sheet for easy separation.
• transitive verb To mark or divide with a roulette.

from The Century Dictionary.

• noun An engravers' tool, used for producing a series of dots on a copperplate, and in mezzotint to darken any part which has been too much burnished.
• noun A cylindrical object used to curl hair upon, whether of the head or of a wig.
• noun In geometry, a curve traced by any point in the plane of a given curve when this plane rolls on this curve over another curve.
• noun A game of chance, played at a table, in the center of which is a cavity surmounted by a revolving disk, the circumference of which is generally divided into 38 compartments colored black and red alternately, and numbered 1 to 36, with a zero and double zero.
• To mark with dotted lines with a roulette.
• To perforate with a roulette or similar instrument, as in preparing blank checks, for ease and convenience in removal from a stub, or sheets of printed postage-stamps for the separation of the stamps, the one from the other, when needed.

from the GNU version of the Collaborative International Dictionary of English.

• noun 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.
• noun A small toothed wheel used by engravers to roll over a plate in order to order to produce rows of dots.
• noun A similar wheel used to roughen the surface of a plate, as in making alterations in a mezzotint.
• noun (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.
• noun A small toothed wheel used to make short incisions in paper, as a sheet of postage stamps to facilitate their separation.
• transitive verb To make short incisions in with a roulette; to separate by incisions made with a roulette.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable 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.
• noun countable A small toothed wheel used by engravers to roll over a plate in order to produce rows of dots.
• noun countable A similar wheel used to roughen the surface of a plate, as in making alterations in a mezzotint.
• noun countable (geometry) The locus of a point on a plane curve that rolls without slipping along another fixed plane curve.
• noun any of the small incisions on a sheet of stamps, used as an alternative to perforations.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a wheel with teeth for making a row of perforations
• noun a gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in
• noun a line generated by a point on one figure rolling around a second figure