Definition of double hit

An illegal shot (foul) in which the cue stick's tip contacts the cue ball twice during a single stroke. Double hits often occur when a player shoots the cue ball when it is very close to an object ball or cushion, because it is difficult to move the cue stick away quickly enough after the cue ball rebounds from the cushion or object ball.

24 Random Essential Billiards Terms

This is to miss your shot but either luckily or on purpose leave your opponent with nothing to shoot at.
An agreement between two players in a tournament, one of whom will advance to a guaranteed money prize if the match is won, to give a certain percentage of that money to the loser of the match. Also known as a saver.
Same as angle of reflection.
Asian Pocket Billiard Union. The APBU is a member of the WPA.
This is the apex ball in the triangle, racked on the foot spot in a normal game.
Used with an amount to signify money added to a tournament prize fund in addition to the amount accumulated from entry fees (e.g. "$500 added").
The interlocking connection between the butt and shaft ends of a two-piece cue stick. Usually connects via means of a steel or wooden pin, and may be protected by a collar of metal or some other material, or may connect wood-on-wood.
Any shot where the cue ball is intentionally jumped into the air to clear an obstacle
Chiefly British: The rail at the Top of the table. Compare foot rail; contrast Bottom rail.
This is a creative game played between four players, using hands instead of cue sticks. The goal is to shoot as many balls as possible into the diagonally opposing corner pocket you are standing behind. The shooting is done taking turns and rotating counter clockwise. When misses on the pocket occur, the ball is open game to be stolen and pocketed in the new opposing pocket during the new owners turn. Ties are decided by lagging with the hands, and the winner of one game is the first to shoot in the next.
Hitting the object ball with not enough of a cut angle; hitting the object ball too full or "fat". It is a well-known maxim that overcutting is preferable to undercutting. See also professional side of the pocket.
Any mechanical aid that serves to extend the length of the player's cue, normally added to the end of the butt either by clipping around the end or screwing into the base. Though extensions are used for pool, it is more common in snooker because of the significantly larger table size.
In a tournament where players get limited time to make their shots (common in televised matches), an extension is extra time granted before making a shot; players have a limited number of extensions in each frame.
When the object balls in straight rail pool are lined up close to each other, but extending out from the cushion, and you choose to bounce off the first object ball at the cushion and then come back to graze the second object ball. This technique can be used to continue scoring points as long as you are efficient with the shot.
The Union Mondiale de Billard (French for World Union of Billiards) is the world governing body for carom (carambole) billiard games. The organization was founded in Madrid, Spain on 1 June 1959, and is dedicated to promoting the modern carom billiards games. The UMB monitors and controls international carom competitions and tournaments, and organizes an annual World Three-cushion Billiards Championship.
This is a particular ball which lends itself to be used as a "blocker" or a "protector."
To use a particular ball as security by playing a safety or leaving it where it will act as one.
Two or more object balls that are touching or are close together.
This is a tool used to keep your cue tip from mushrooming. This small tool slides over the tip and turns to refine the sides, keeping your tip shaped the way it should be.
A specific ball number followed by "out" refers to a handicap in nine-ball or other rotation games where the "spot" is all balls from that designated number to the money ball. To illustrate, the 6-out in a nine-ball game would allow the player getting weight to win by legally pocketing the 6, 7, 8 or 9 balls.
Short for run out, especially as a noun: "That was a nice out."
This is the portion of the butt of your cue just below the handle or wrap. This portion of the cue is made separately and often times cored out to ensure the proper weight balance within the full length of the cue. This portion of the cue is usually made with exotic wood that matches the wood in the forearm or in the points on the forearm. This section is used to highlight the design of the forearm, sometimes a re-creation, a reverse, or a rendition of the same pattern on a smaller scale.
When the cue ball is tucked behind the corner of a pocket, therefore not allowing a direct shot at the object ball.
This is a ball that is positioned near your pocket that can be used to kiss off of when sinking another object ball.
Describes a ball rolling along a rail in contact or near contact with it, or which makes multiple successive contacts with the rail.
Any shot in which the cue ball or an object ball has to squeeze by (just miss with almost no margin for error) another ball or balls in order to reach its intended target.
Any system for banking or kicking balls multiple rails which uses table diamonds as aiming references.