eight-ball

Meaning

noun A pocket billiards (pool) game played with sixteen balls (a cue ball and fifteen object balls) on a pool table with six pockets.
noun The billiard ball, almost always black, bearing the number eight.
noun A portion of cocaine or methamphetamine weighing ⁄8 of an ounce, or 3.5 grams.
noun A black person.
noun A spherical attitude indicator.
noun A kind of spherical microphone.
verb To outplay (an opponent) by potting all one's color balls and then the black (or eight-ball) without the opponent potting a single one.