Definition of Take a scratch

Also known as a Dead cushion. A cushion that has either lost a degree of elastic resiliency or is not firmly bolted to the frame, in both cases causing balls to rebound with less energy than is normal.

Displacement of the cue ball's path away from the parallel line formed by the cue stick's direction of travel; occurs every time english is employed. The degree of deflection increases as the amount of english applied increases. It is also called squirt, typically in the United States.

Making all of the required shots in a game (rack) without the opponent ever getting to the table or getting back to the table.

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.

Also yellow(s).
In snooker, the lowest-value colour ball on the table, being worth two points. It is one of the baulk colours.
In blackball, one of two groups of seven object balls that must be potted before the eight ball; compare stripes; contrast red ball.

This refers to the distance of deflection that the ball comes off of the cue stick after a hit is applied with side spin on it.

Also bigs, big balls, big ones. In eight-ball, to be shooting the striped suit (group) of balls (9 through 15); "you're big, remember", "you're big balls" or "I've got the big ones". Compare stripes, yellows, high, overs; contrast little.

Jargon for a tournament chart, showing which players are playing against whom and what the results are. Often shortened to card.

Same as foul

Short for top spin, i.e. same as follow.
Chiefly British: The half of the table in which the object balls are racked (in games in which racked balls are used). This usage is conceptually opposite that in North America, where this end of the table is called the foot. In snooker, this is where the reds are racked, nearest the black spot; this is the area in which most of the game is usually played.
Chiefly American: Exactly the opposite of the above - the head end of the table. No longer in common usage.

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.

American Poolplayers Association. This is the largest association of pool players in the world, and includes The Canadian Poolplayers Association. With numerous tournaments, including the U.S. Amateur championship, they are a force on the competition scene.
The APA has established the use of the "Equalizer" which offers handicaps to players and equalizes the playing field like in golf.

An exhibition shot designed to impress either by a player's skill or knowledge of how to set the balls up and take advantage of the angles of the table; usually a combination of both. A trick shot may involve items otherwise never seen during the course of a game, such as bottles, baskets, etc., and even members of the audience being placed on or around the table.

An unintentional and often barely perceptible curve imparted to the path of the cue ball from the use of english without a level cue. Not to be confused with a swerve shot.

Successive games won without the opponent getting to the table; a five-pack would be a package of five games.

Also smalls, small ones, small balls. In eight-ball, to be shooting the solid suit (group) of balls (1 through 7); "you're the small one" or "I've got the smalls". Compare little, solids, reds, low, spots, dots, unders; contrast big.

Nickname for the nine ball, usually only used when playing the game 9-Ball.

This is how the player is who is does not break before they get a chance to get out of the break. This time period is when the breaking player with a position advantage on the table.

Chiefly American: The half of the table in which the object balls are racked (in games in which racked balls are used). This usage is conceptually opposite that in British English, where this end of the table is called the top. Contrast head.

Also littles, little ones, little balls. In eight-ball, to be shooting the solid suit (group) of balls (1 through 7); "you're little, remember", "you're the little balls" or "I've got the littles". Compare small, solids, reds, low, spots, dots, unders; contrast big.

The pocket in snooker that is closest to the green spot.

This is a term used more in snooker to refer to a follow shot, when the cue ball is hit above center to allow it to follow the object ball after impact.

Chiefly American: The cushion on the head rail. Compare bottom cushion; contrast foot cushion.

One-pocket (often spelled one pocket) is a two-player (or -team) pocket billiards (pool) game. The object of the game is to score points by pocketing (potting) pool balls into specific pockets. A point is made when a player makes any object ball into that player's designated pocket. The winner is the first to score an agreed-upon number of points (most commonly 8). The player making the break shot (typically after winning the lag) chooses a foot corner pocket for the rest of the game; all of that shooter's balls must be shot into that pocket. All of the opponent's balls must be made in the other foot corner pocket.