Definition of Mark

The Higher Education Snooker and Pool Council is a voluntary, not-for-profit organisation established to promote cue sports in institutions of higher education on the island of Ireland.

Same as duck. Derives from an easily shot ball "hanging" in the pocket.

Named after their innovator, legendary cuemaker George Balabushka, Bushka rings are decorative bands of material incorporated into pool cues, commonly just above the wrap area, in the form of ebony and ivory blocks, or sometimes other materials, alternating in a checked pattern.

Usually a one-piece cue freely available for use by patrons in bars and pool halls.

The three-foul rule describes a situation in which a player is assessed a defined penalty after committing a third successive foul. The exact penalty, its prerequisites and whether it is in place at all, vary depending on the games. In nine-ball and straight pool, a player must be the told he is on two fouls in order to transgress the rule, and if violated, results in a loss of game for the former and a special point penalty of a loss of fifteen points (plus one for the foul itself) in the latter together with the ability to require the violator to rerack and rebreak. In Irish standard pool and English billiards, it is a loss of game if a player commits a third foul while shooting at the black. In snooker, three successive fouls from an unsnookered position result in forfeiting the frame. Repeat fouls from a snookered position are quite common - Dave Harold holds the record in a competitive match, missing the same shot 14 successive times.

This is to watch a match with such intensity that there is worry, usually because of a wager on the game.

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.

This is a bank in one pocket pool that is sitting at an angle that makes it unsafe to play.

This is the red colored object ball in carom games.
In snooker, any of the 15 balls worth 1 point each that can be potted in any order. During the course of a break a player must first pot a red followed by a colour, and then a red and colour, etc., until the reds run out and then the re-spotted six colours must be cleared in their order. Potting more than one red in a single shot is not a foul - the player simply gets a point for each red potted.
In blackball, one of two groups of seven object balls that must be potted before the black. Reds are spotted before yellows, if balls from both group must be spotted at the same time. Compare stripes; contrast yellow ball.
In carom billiards, the object ball that is neither player's cue ball.

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.

This is the International Billiards and Snooker Federation. This organization governs non-professional snooker and billiards play all over the world.

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.

A set practice routine.
In British terminology, a bank shot.

When the object ball banked of a rail goes directly in a pocket without kissing or touching any other object balls.

This is a kind of cue made of only two pieces of wood, and joined together using an advanced adhesive along the points of the cue. This connection gives the cue a flawless look and a fluid feel when shooting.

This is the white ball in carom games which is separated from the clear ball by a marking (usually a dot or spot).

Used by itself often with "low" and "high": "that's a low-percentage shot for me", "I should really take the high-percentage one".

Linen made from flax and produced in Ireland which is often used to wrap the gripping area of the butt of a cue.

Cueing and timing the balls well; in good form, where pocketing (potting), safety and clarity of thinking seem to come easily.

Skilled playing in which knowledge of ball speed, angles, post-impact trajectory, and other factors are used to gain position (i.e. a good leave) after the target ball is struck. The goals of position play are generally to ensure that the next shot is easy or at least makeable, and/or to play a safety in the advent of a miss (intentional or otherwise).

Any standard pool cue used to shoot the majority of shots in a match.

Means either push out or push shot, depending on the context.

To sink a ball into a pocket.

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.