Definition of intentional foul

Also known as a "Dirty Defense" or "Dirty Foul". To intentionally miss a shot (that results in a foul) in order to create a position for the cue ball that makes it hard for the other player to execute their shot. Not to be confused with a "Safety", since a safety is a legal hit.

24 Random Essential Billiards Terms

Same as side rail.
In blackball, a situation where the player cannot see any of the balls she/he wants to hit due to obstruction by other balls or the knuckle of a pocket. The player must call "total snooker" to the referee, which allows a dispensation to the player from having to hit a cushion after contacting the object ball, which is otherwise a foul.
A (principally American) term in eight-ball for either of the set of seven balls (stripes or solids) that must be cleared before sinking the 8 ball. Borrowed from card games. Generally used in the generic, especially in rulesets or articles, rather than colloquially by players. See also group for the British equivalent.
This is the ball that sits in the front, or apex, position in the rack.
The triangular device, generally plastic, used to group the balls in a pyramid form prior to the beginning of a game.
This is the final object ball you need to pocket in order to win a game of one pocket.
An intentionally amateurish stroke to disguise one's ability to play.
A shot played with stun, but not quite enough to completely stop the cue ball, allowing for a little follow. It is played so that a follow shot can be controlled more reliably, with a firmer strike than for a slow roll. It is widely considered as one of the most difficult shots in the game to master, but an excellent weapon in a player's armory once it has been.
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.
A cluster of balls. In snooker, the bunch of reds that are typically left below the pink spot in the early stages of a frame, not including those reds that have been released into pottable positions.
Short for right english (side), i.e. side spin imparted to the cue ball by stroking it to the right-hand side of its vertical axis. Contrast left.
A 7 inch (17.8 cm) square box drawn on a balkline table from the termination of a balkline with the rail, thus defining a restricted space in which only 3 points may be scored before one ball must be driven from the area. It developed to curtail the effectiveness of the chuck nurse, which in turn had been invented to thwart the effectiveness of the Parker's box in stopping long, repetitive runs using the anchor nurse.
The World Pool-Billiard Association (WPA) is the international governing body for pocket billiards (and also sactions rules and events for carom billiards games as well, in cooperation with other bodies). The group was formed in 1987, and was initially headed by a provisional board of directors consisting of representatives from the United States, Japan, Sweden, and Germany.
In the game 9 Ball, making the nine ball early with a legal shot, but not on the break.
Any system for banking or kicking balls multiple rails which uses table diamonds as aiming references.
The Billiards World Cup Association. The Billiards World Cup Association (BWA) was a governing body for carom billiards, like its competitor and successor, Union Mondiale de Billard. After staging several three-cushion billiards championships, BWA met its demise in 2004 due to financial problems and failing relations with the UMB, leaving the latter as the only carom governing body.
On two piece cues, the area of the cue between the joint and the wrap.
This is a long distance shot that is given to your opponent as a challenge to make because it often works well as a safety (defense) when a better one is not available.
This is a toned down masse shot. The cue is elevated a little and will curve a little in the direction the spin is applied. This is used to sneak around difficult shots.
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.
Also straight eight-ball. Same as bar pool. Not to be confused with the games of straight pool or straight rail.
This is a very easy and safe shot to execute in the game of one pocket.
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 split shot. In pool, a type of shot in which two object balls are initially contacted by the cue ball simultaneously or so close to simultaneously as for the difference to be indistinguishable to the eye. In most sets of rules it is a foul if the split is one in which one of the object balls is a (or the only) legal target (ball-on) and the other is not; however, such a split is commonly considered a legal shot in informal bar pool in many areas if it is called as a split and does appear to strike the balls simultaneously).