billiards, any one of a number of games played with a tapered, leather-tipped stick called a cue and various numbers of balls on a rectangular, cloth-covered slate table with raised and cushioned edges. Games similar to billiards were popular in England and France in the 16th cent., and evidence even suggests that a billiardslike game was played in the 14th cent. The country of origin is disputed—England, France, Italy, Spain, and China have been credited by various historians with its invention. The game in its present form was probably fully developed by 1800. There are three main types of billiards: carom billiards, pocket billiards (also known as pool), and snooker. Carom billiards is played with three balls, a cue ball and two object balls, on a pocketless table; scoring is by caroms only, i.e., by causing the cue ball to strike the object balls in specified ways. Pocket billiards is played with 15 object balls and a cue ball on a table with six pockets; the essential object of the game is to cause the object balls to enter the pockets. Snooker is similar to pocket billiards, except that it uses 21 object balls and smaller pockets. There are many additional variations of the basic games, depending on the number of balls used, the positioning of the balls, the boundaries on the table, and the scoring. Among the variations are Chicago, golf, rotation, balk-line, and bumpers. William Frederick Hoppe is generally considered the foremost billiards player of all time.

or pocket billiards

Billiards game played on an oblong table having six pockets with 15 object balls and a white cue ball. At the beginning of play, the balls are arranged (racked) in a pyramid formation with its apex on a spot near the foot of the table. The first player breaks the formation by driving the cue ball into it; to continue play, he or she must hit a ball into a pocket. In the popular “8-ball” game, the first player (or team) to sink either the seven solid-coloured balls (numbered 1–7) or the seven banded (striped) balls (9–15), finishing with the black 8-ball, wins. In “9-ball,” only the balls numbered 1–9 are used, and they must be sunk sequentially; the player who sinks the 9-ball wins. Pool probably reached its present form in England and France by circa 1800; today it is most popular in North America.

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Any of various games played on a cloth-topped, cushion-railed rectangular table by driving small, hard balls against one another or into pockets with a long stick called a cue. Carom, or French billiards, is played with three balls, two white and one red, on a table without pockets. The object is to stroke the white cue ball so that it hits the two object balls in succession, scoring a carom (one point). English billiards is also played with three balls but on a pocketed table; it is scored in various ways. Snooker is another popular British billiards game. The principal billiards game in North America is pocket billiards, or pool. The Billiard Congress of America controls U.S. tournament play, including the U.S. Open Pockets Billiard Championship, regarded as the world championship.

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