Someone who spreads AIDS (HIV) in multiple places, such as night clubs, swimming pools, parks and the like. A poolshark is attracted to males, generally children. Dogs and horses are common subjects too.
Mother: My cat has been violated by a creature attracted to children and animals!
Police officer: Indeed. This is definately a poolshark on the loose.
A weapon used to give someone a really nasty infection. Such as a Tooth Brush Fashioned into a prison shank then dipped into poop. The Toothbrush itself is fairly non lethal but the infection from the Poopshank will be deadly.
"Woman if you don't shut your mouth im gunna stab you with a Poopshank"
One whose goal is to con money out of others by using a combination of deception, talent, and straight coercion, combined with the game of billiards, to take advantage of susceptible players.
Mac had been poolsharking for only two days, and he already had enough cash to buy that new Rolex.
The best pool playa. Person who shoots pool so well that they rule the table for hours on end. Uses defense, mad english, doesn't talk shit, and grabs the ball for opponent when she scratches. And always shakes the persons hand and thanks them for a great game when they kick your ass.