Billiard
      
Billiard or billiards may refer to:
Games
-  A billiard, a type of shot in cue sports (see below)
-  Billiards: cue sports in general, including pool, carom billiards, snooker, etc.; the term "billiards" by itself is also sometimes used to refer to any of the following more specifically:
-  Carom billiards (also known as French billiards) games in general (a chiefly non-British usage)
-  Three-cushion billiards even more specifically, the most popular form of carom billiards worldwide (the most common specific usage)
-  The specific game of English billiards (a chiefly British, Irish and Australian usage)
-  Pool (pocket billiards) games, such as eight-ball and nine-ball, in general (a chiefly colloquial North American usage)
 
-  See the list of cue sports for various other games with "billiards" in their names; also more specifically:
-  Electric billiards, an obsolete term for pinball (from billard électrique in French, in which pinball is today called flipper, a borrowing from English)
Mathematics and physics
-  Billiard (number), the long-scale name used in most European languages for the number 1015 (called quadrillion in the short scale generally used in English).
-  Dynamical billiards, the mathematical theory of particle trajectories within a closed reflective boundary
People
See also
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