Definition of long double

Chiefly British: bank shot played up and down the longer length of the table off a short rail and into a corner pocket, as opposed to the more common bank across the short length into a center pocket or corner.

24 Random Essential Billiards Terms

Also sidespin, side-spin, side. spin placed on the cue ball when hit with the cue tip to the left or right of the ball's center; usually called english in American usage. See english, in its narrower definition, for details on the effects of side spin.
Confederation Panamerica of Billiards
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.
Anything that causes a foul according to the rules of a game.
Also the hook. In snooker, a type of mechanical bridge that has only recently been endorsed by the WPBSA to allow its use in major tournament play. It is a normal rest with the head in line with the shaft, but the last foot or so of the shaft is curved. This allows players to position the curved end around an obstructing ball that would have otherwise left them hampered on the cue ball and in need of a spider or swan with extensions, which would have less control.
This is a tool that is used to shape a cue stick. It holds the cue in place while rotating it along a cutting edge. This tool can also be used to hold the cue in place while constructing or repairing other parts on the cue.
This is a bank in one pocket pool that is sitting at an angle that makes it unsafe to play.
Chiefly British: Same as shark (senses 1, 2). The term appears in lyrics from The Mikado (1884) in relation to billiards, and developed from sharper (in use by at least 1681, but now obsolete) meaning "hustler" but not specific to billiards.
Either of the two shorter rails on a standard pool, billiards or snooker table. Contrast side rail/long rail.
The pocket chosen to house the selected ball in your called shot.
The point in match play where both players (or teams) need only one more game (frame) victory to win the match or race.
The United States Snooker Association (USSA) is the internationally recognized governing body of the sport of snooker in the United States. Founded in 1991 by the British-born Michael Collins, the USSA is a member of the International Billiards and Snooker Federation (IBSF), the world governing body of non-professional English billiards and snooker, and is affiliated with the American CueSports Alliance (ACS).
Refers to a person gambling when he has no money. As in, "That jerk can't pay up, he was shooting air barrels the whole time".
A joint type which makes it possible to screw and unscrew the butt and shaft very quickly; faster than standard threads.
Accidentally causing the cue ball or any object ball to leave the table. It is normally a foul.
This is an instance when the person not taking their turn interferes with the game play, this is recorded as a foul.
In snooker, a pot into any of the corner pockets where the cue ball had started in the opposite lengthwise half of the table. In other words, a pot in which the cue ball or object ball crosses an imaginary line joining the middle pockets.
Sometimes interchangeable with scratch, though the latter is often used only to refer to the foul of pocketing the cue ball. A violation of a particular game's rules for which a set penalty is imposed.
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.
A three cushion billiards shot in which the cue ball first strikes two cushions before hitting the first object ball then hits a third cushion before hitting the second object ball. So called because the shot opens up like an umbrella after hitting the third rail. Umbrella shots may be classified as inside or outside depending on which side of the first object ball the cue ball contacts.
Describes lucky or unlucky "rolls" of the cue ball; "I had good rolls all night; "that was a bad roll." However, when said without an adjective ascribing good or bad characteristics to it, "roll" usually refers to a positive outcome such as in "he got a roll".
The roll: same as the lag.
A shot where the shooter was trying to make the shot but misses. However, the result of the missed shot ends up being a very good defensive play.
This describes a shot where you bank the object ball off of a rail and then sink it in a corner pocket.
Failure to hit an object ball at all with the cue ball. In most sets of rules, this is a foul like any other. However, in some variants of bar pool a table scratch while shooting for the 8 ball is a loss of game where other more minor fouls might not be, as is scratching on the 8 ball (neither result in a loss of game in most professional rules).
By way of drift from the above definition, the term is also applied by many league players to the foul in more standardized rules of failing to drive a (any) ball to a cushion, or to pocket a legal object ball, after the cue ball's initial contact with an object ball.
By way of entirely different derivation ("scratch off the table"), it can also mean knocking the cue ball (or more loosely, any ball) completely off the table.