Definition of 9 ball

Nine Ball is a rotation game so a player must hit the lowest numbered ball first.
The object of the game is pocket the 9-ball on any legal shot.

24 Random Essential Billiards Terms

Four-ball is a carom billiards game. The game is played on a pocketless table with four balls, usually one light red, one dark red, and two whites (or just two reds and two whites). Each player is assigned one of the white balls as his own cue ball. A point is scored when a shooter caroms on any two other balls. Two points are scored when the player caroms on each of the three other balls.
A specific way of holding the shaft in your hand. The closed hand bridge is a hand bridge where the index finger wraps over the cue stick for control.
In eight-ball, when all object balls are balls-on for either player.
A description of a break shot in which the rack (pack) is spread apart well. See also the open break requirement in some games' rules, including eight-ball and nine-ball.
In carom billiards, descriptive of play in which the balls are not gathered.
A rare and extremely difficult trick jump shot that turns into a massé upon landing. Requires very precise application of spin in addition to the precise application of ball pressure to effectuate the jump. Turn-of-the-20th-century World Balkline Champion Jacob Schaefer Sr. was known to daringly perform jump massés in competition.
A type of rest, with a straight shaft and "x"-shaped head for resting the cue upon.
A game of pool played on a table shaped like a rectangle, with or without pockets.
This is a player that will regularly loose money to a particular player that is obviously a better player.
This is to direct the cue ball by barely contacting an object ball.
This is a very easy and safe shot to execute in the game of one pocket.
This is a shot that attempts to move a number of balls onto your side of the table in a kind of herding attempt.
Also string off. Chiefly British; Obsolete: Same as string or lag.
A shot that has a positive outcome for the player, although it was not what the player intended. Examples of flukes include an unexpected pot off several cushions or other balls having missed the pocket aimed for, or perhaps a lucky safety position after having missed a pot. Compare fish and slop; contrast mark (sense 3) and call. It is customary to apologise to one's opponent if one does this.
This term refers to a low percentage one pocket shot.
This is a certain type of system used to determine who plays first in the next game. These methods are not synonymous with pool skills, and are more along the lines of flipping a coin, paper-rock-scissors, or drawing straws.
The pool player who is at the table taking their shot.
Any standard pool cue used to shoot the majority of shots in a match.
Hitting the object ball with too large of a cut angle; hitting the object ball too thin. It is a well-known maxim that overcutting is preferable to undercutting in many situations, as is more often leaves the table in a disadvantageous position on the miss than does an undercut. See also professional side of the pocket.
To intentionally rebound the cue ball off both of the pocket points to achieve position.
A pool room may refer to an establishment that is the same as a pool hall. A private residence may also have a pool room. That would be a room in a house or a recreation room in an apartment building, hotel or condominium complex that has a room that the main activity is dedicated to playing pool.
Verb form: to shoot. The use of the cue to perform or attempt to perform a particular motion of balls on the table, such as to pocket (pot) an object ball, to achieve a successful carom (cannon), or to play a safety.
Also straight eight-ball. Same as bar pool. Not to be confused with the games of straight pool or straight rail.
Certain rules say you must designate your shot before taking it. Generally this is just calling the ball to be sunk in which pocket, and is not dependent on touching rails or other balls, but very well can be.
Any game which uses a rack composed of less than 15 balls.
Sandbagging, in any handicapped sport, is the unethical practice of deliberately playing below your ability in order to alter your handicap so it does not reflect your true ability.