Definition of Jack n jill

A pejorative term for an improper rack in which the balls are not properly in contact with their neighbors, often resulting in a poor spread on the break.

When the cue ball contacts three or more cushions in carom games.

The cue ball's position after a shot. "Good" or "bad" in reference to a leave describe respectively and advantageous or disadvantageous position for the next shot, or to leave an incoming opponent safe.

Three Ball is a pocket billiards folk game played with three standard pool object balls and a cue ball. The goal is to pocket the three object balls in as few shots as possible.

A British term describing when a ball is tight on the cushion and a player sends the cue ball to hit both the object ball and the rail at nearly the same time; the object ball, ideally, stays tight to the rail and is thus "velcroed" to the rail. Inside english is often employed to achieve this effect, hitting slightly before the ball. The movement of a ball just next to the rail (but not the shot described to achieve this movement) is called hugging the rail in both the UK and the US.

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.

This is a bank in which the object ball hit will cross the path of the cue ball on the way to its destination.

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

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.

This is when you strike a cue ball off center to gain control on the movement on the cue ball.

A slang term for a cue, usually used with "piece", as in "that's a nice piece of wood".

The overall competition between two players, two pairs of players or two teams of players, usually consisting of a predetermined number of frames or games (sometimes organized into rounds).

A type of spin imparted to the cue ball to make it rebound from a cushion at a shallower angle than it would if the spin had not been used.

A break shot in which the object is to leave the incoming player with no shot or a very difficult shot, such as is normally employed in the opening break of straight pool. Cf. open break.

In one pocket pool this means that you change your play based on where the count is during the game. If you are ahead you might choose more conservative shots, and if you are behind you could choose more aggressive shots.

Shooting at an object ball that is already in motion at the moment of shooting and cue ball impact; illegal in most games and usually only seen in exhibition/trick shots.

A shot where the cue ball must hit the object ball so as to make it travel out of a straight line, at a different angle, toward its destination.

A British term for someone with little experience or understanding of the game, who may be skilled at potting individual balls but does not consider tactics such as position or safety; "he's a potter not a player." See also banger.

This technique works to keep your shot aligned by eyeing your shot above the table, and then locking your chin into position as you lower down to take your shot.

This is English that turns into running action after contact with the object ball. This will open up the angle on a bank.

The desired angle that must be created between the path of the cue ball and the path of the object ball upon contact to pot the object ball. It is usually measured to the center of the pocket. See also aiming line.

A tactic employed in UK eight-ball pool in which a player calls and pots one of the balls in a favorably lying set, then plays safe, leaving as many of his/her well-placed balls on the table as possible, until the opponents commits a foul or leaves a chance that the player feels warrants an attempt at running out.

Ten Ball is a rotation is a rotation game very similar to nine-ball, using ten balls instead of nine, and with the 10 ball instead of the 9 as the "money ball".
The object of the game is pocket the 10-ball on any legal shot.

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.