Definition of the d

A semicircle with an 11½ inch (291 mm) radius, drawn behind a snooker table's baulk line, centred on the middle of the line, and resembling the upper case letter "D" in shape. The "D" is also used in English billiards and sometimes also in blackball and other pool games played on British-style tables.

24 Random Essential Billiards Terms

Also (chiefly British) shot programme. The enumerated trick shots that must be performed in the fields of artistic billiards (70 pre-determined shots) and artistic pool (56 tricks in 8 "disciplines").
Slang term for the cue ball.
Same as visit.
This term is much like rain table and refers to a table is playing soggy due to humid conditions.
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.
Also shot to nothing. A British term for a shot in which a player attempts a difficult pot but with safety in mind, so that in the event of missing the pot it is likely that the opponent will not make a meaningful contribution, and will probably have to reply with a safety. The meaning refers to lack of risk, i.e. at no cost to the player ("for nothing" or coming "to nothing"). Compare two-way shot.
This is when you strike a cue ball off center to gain control on the movement on the cue ball.
This is a type of shot where the cue ball goes off the rail before it heads to contact the object ball, thus giving the cue better position in some shots.
When a player is on the receiving end of a devastating safety where it is very difficult or near impossible to make a legal hit on an object ball.
To take one's two-piece cue stick apart. When done before a game's conclusion, it often indicates that the game is conceded.
Derived from "sitting duck", usually referring to an object ball sitting close to a pocket or so positioned that is virtually impossible to miss. Same as hanger (US, colloquial), sitter (UK).
When you have completed a shot by pocketing a ball into a pocket.
This is a version of double elimination tournament play that splits the field of competitors into two brackets that come together for a single elimination championship game.
When the cue ball is tucked behind the corner of a pocket or behind other object balls against a rail, therefore not allowing a direct shot at the object ball without the cue bouncing off the corner of the rail.
A term also used to mean when the object ball you must hit next is hidden behind other balls against a rail and you are not able to get a clean hit (without hitting other object balls first) on it. e.g. "You hooked me".
CPA is the acronym for the Canadian Poolplayers Association. The CPA is the Canadian league of the APA (The American Poolplayers Association)
This is the highest number of consecutive points scored during an inning of continuous pool play.
To shoot without taking enough warm-up strokes to properly aim and feel out the stroke and speed to be applied. One-stroking is a common symptom of nervousness and a source of missed shots and failed position.
The World Confederation of Billiard Sports (WCBS, sometimes called the World Confederation of Billiards Sports) is the international umbrella organization encompassing the major cue sports (billiards-type games), including carom billiards, pool games of several varieties, and snooker. The primary aim of WCBS is to establish billiard-type sports as medal events in as many multiple-sports competitions as possible, on both regional and world levels. The ultimate goal of WCBS is to have billiard sports included in the Olympic Games.
A phrase used in snooker to describe the scenario whereby there are not enough available points on the table to level the scores for the frame, therefore the trailing player needs his/her opponent to foul in order to be able to make up the deficit. The name comes from the fact that this would normally have to be achieved by placing the leading player in foul-prone situations such as difficult snookers.
A type of rest, with a straight shaft and "x"-shaped head for resting the cue upon.
When the object ball lies behind another ball which makes it impossible to be struck by the cue with a direct hit.
With draw, as in "I shot that low left", meaning "I shot that with draw and with left english". Derives from the fact that one must hit the cue ball below it's equator, i.e. "low" on the ball, to impart draw. Contrast high.
Billiard Congress of America. The official governing body for pocket billiards in the United States.
A cue dedicated to jumping balls; usually shorter and lighter than a playing cue and having a wider, hard tip. Also referred to as a jump stick.