eightball

noun
  1. 1

    A pocket billiards (pool) game played with sixteen balls (a cue ball and fifteen object balls) on a pool table with six pockets.

  2. 2

    The billards ball, almost always black, bearing the number eight.

  3. 3

    A portion of cocaine or methamphetamine weighing 1/8 of an ounce, or 3.5 grams.

  4. 4

    A black person.

Source: https://en.wiktionary.org/wiki/eight-ball, https://en.wiktionary.org/wiki/eightball