Definition of Umbrella shot

1- Short for "pool shark", poolshark (US); sharp, "pool sharp" (British)

2- Verb: To perform some act or make some utterance with the intent to distract, irritate or intimidate the opponent so that they do not perform well, miss a shot, etc. Most league and tournament rules forbid blatant sharking, as a form of unsportsmanlike conduct, but it is very common in bar pool.
Noun: Another term for hustler.
Noun: A very good player. This usage is common among non-players who often intend it as a compliment and are not aware of its derogatory senses .

The act of setting up the balls for a break shot. In tournament play this will be done by the referee, but in lower-level play, players either rack for themselves or for each other depending on convention.

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).

This a shot that hits the object ball at the nine ball to see if you can get lucky by sinking the nine ball in any pocket. (also see Cheese the Nine and Rolling the Cheese).

This is a style of play where the player is required to stay on top of all the scoring practices. Scratches and points will disappear if they are not remembered.

To play a shot with the stroke and speed that makes it easiest to pocket the object ball, even at the expense of sacrificing position.

Also string off. Chiefly British; Obsolete: Same as string or lag.

Also piquet. Either a massé shot with no english, or a shot in which the cue stick is steeply angled, but not held quite as vertical as it is in full massé.

The point on the table surface over which the apex ball of a rack is centered (in most games). It is the point half the distance between the long rails' second diamonds from the end of the racking end of the table. The foot spot is the intersection of the foot string and the long string, and is typically marked with a cloth or paper decal on pool tables.

This is a unique game played on a table with smaller pockets. The balls are racked in a typical pyramid, but after the break any ball can be the cue ball, and you can score by hitting a ball in or by putting the ball in after bouncing it from another object ball.

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.

Any one of numerous acts which unethical players employ to rattle or upset their opponent. Taking, making noise, and chalking your cue while your opponent is shooting are all considered sharking tactics.

An illegal shot (foul) in which the cue stick's tip contacts the cue ball twice during a single stroke. Double hits often occur when a player shoots the cue ball when it is very close to an object ball or cushion, because it is difficult to move the cue stick away quickly enough after the cue ball rebounds from the cushion or object ball.

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

Nearly table-length distance between the cue ball and target object ball, or near cue and object balls and target pocket, i.e. a potentially difficult shot ("you sure left me a lot of green on that one").
The cloth covering the table.

This is the running score of a player during his inning of play. The sum of the continuously scored points, or where the player stands in the run on the table.

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

The ease with which a player is generating cue power, due to well-timed acceleration of the cue at the appropriate point in a shot.

This is a tip tool for cleaning the edges of you tip after mushrooming occurs.

A description of play in carom billiards games in which the balls remain widely separated rather than gathered, requiring much more skill to score points and making nurse shots effectively impossible, and making for a more interesting game for onlookers. Most skilled players try to gather the balls as quickly as possible to increase their chances of continuing to score in a long run.

Sometimes called a snake shot. A carom billiards shot, common in three-cushion billiards, where the cue ball is shot with reverse english at a relatively shallow angle down the rail, and spins backwards off the adjacent rail back into the first rail.

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 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.

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.