Billiards Vault

Definition of Half ball hit

A shot aimed so that the center of the cue ball is in line with the edge of the object ball, eclipsing half of the ball. "Hit it just a little thinner than half-ball." Assuming a cling does not occur, the shot will impart post-contact momentum on the object ball in a direction 30° (which is arcsin(1 - x), where x is the fraction of object ball eclipsed: ½ in this case) off the direction of the cue-ball's pre-contact momentum. Also notable because the carom angle the cue ball takes is more consistent than at other contact points.

24 Random Essential Billiards Terms

The full fifteen ball set of pool or snooker object balls after being racked, before the break shot (i.e., same as rack, definition 2, and triangle, defn. 2). Chiefly British today, but also an American usage ca. World War I.
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.

1- Applying very powerful follow on the cue ball thereby causing the maximum amount of follow.

2- A powerful follow shot with a high degree of top spin on it; usually when the object ball being hit is relatively close to the cue ball and is being hit very full; also known as "prograde top spin" or "prograde follow" (when referring to the action on the shot rather than the shot per se), and as a "jenny" in Australia.

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.
Three equally spaced diamonds are normally between each pocket on a pool table. On a carom table, the pockets themselves are replaced by additional diamonds. Diamonds get their name from the shape of the markings traditionally used; though many today are round, square, etc., these rail markings are still referred to as "diamonds".
Also known as slop. To pocket a ball by luck; "he ratted in the 9 ball"; usually employed disapprovingly.
This word is used as slang to define a player as amateur or recreational.
Carambole billiards is a French billiards game involving two cue balls and a single red object ball. The purpose of carambole billiards is to obtain points by contacting the object ball and the opponent's cue ball in the same shot.
A defensive action taken when a player either has no "makeable" or "high percentage" shot or chooses to leave his opponent in a difficult situation. It is a legal shot and is not considered to be dirty pool. A safety must still conform with the rule concerning hitting the correct ball first and striking a rail afterwards. If a correct ball is accidentally pocketed while playing safe, the shooter must continue to shoot.
Verb: "To Clock" To carefully note the abilities or betting inclinations of other players for future reference.
This is an imaginary line that separates the halves of the table by crossing at the middle of the side of pockets.
(noun) An opening in a table, cut partly into the bed and partly into the rails and their cushions, into which balls are shot (pocketed or potted).
(verb) Send a ball into a pocket, usually intentionally.
In eight-ball, when all object balls are balls-on for either player.
A description of a break shot in which the rack (pack) is spread apart well. See also the open break requirement in some games' rules, including eight-ball and nine-ball.
In carom billiards, descriptive of play in which the balls are not gathered.
This is a shot where the cue ball caroms off a number of balls in a pin ball, back and forth, fashion to achieve a shot.
A soft joint-like plastic or linen base material. It lets the cue whip, putting more English on the cue ball.
This is a slang term created by Freddy Bentivegna to refer to a cluster of balls on your side of the table that do not lend to easy pocketing in a game of one pocket.
Side spin on the cue ball that causes it to roll off a cushion (contacted at an angle) with rather than against the ball's natural momentum and direction of travel. If angling into a rail that is on the right, then running english would be left english, and vice versa. The angle of deflection will be wider than if no english were applied to the cue ball. But more importantly, because the ball is rolling instead of sliding against the rail, the angle will be more consistent. For this reason, running English is routinely used. Also called running side in British terminology. Contrast reverse english.
A game that basically cannot be lost based on disparity of skill levels; "this game is a lock for him."
The point in match play where both players (or teams) need only one more game (frame) victory to win the match or race.
Toward the foot of the table.
This is a shot that shows great control and positioning in where the cue will be when all the balls stop rolling.
The motion of the cue stick and the player's arm on a shot;
The strength, fluidity and finesse of a player's shooting technique; "she has a good stroke."
A combination of finesse, good judgement, accuracy and confidence.
The collar is the portion of the joint that is attached to the top of the forearm. This is often stainless steel, wood, ivory, or molded phenolic resin, but in any case, made out of a solid material. This portion of the cue is glued on and threaded to reinforce the pin at the end of the shaft, and to offer a stabilized shot out of its solid construction.
This is the white ball in carom games which is separated from the clear ball by a marking (usually a dot or spot).