“8 ball” can mean different things depending on the context, but in modern slang it most often refers to a specific quantity of illegal drugs, especially cocaine, so it is a term closely tied to drug use and crime.

Main slang meaning

  • In drug slang, an 8 ball is about one-eighth of an ounce of a drug, commonly cocaine, typically around 3–3.5 grams.
  • Because it is a drug term, using or asking for an “8 ball” can signal involvement in illegal and potentially very dangerous activity.

If you or someone you know is around people talking seriously about buying or using an “8 ball”, it is safer to step back from the situation and, if needed, seek help from a trusted adult or professional support service.

Pool and gaming meaning

  • In billiards, the 8 ball is the black ball numbered 8 used in the popular game of eight-ball pool.
  • People may say things like “I sank the 8 ball” when talking purely about the game, with no drug meaning at all.

Other slang and minor uses

  • Some references list extra slang uses: the 8 ball as just “the eighth numbered ball,” a cocktail name, a quantity of cocaine specifically, or other niche gang or alcohol slang.
  • In pop culture, “8 ball” can also show up in game titles or usernames because of its pool-game association rather than drugs.

TL;DR: In casual or street slang, “8 ball” almost always means an eighth of an ounce of illegal drugs (especially cocaine), but in everyday gaming talk it’s just the black 8 ball in pool.

Information gathered from public forums or data available on the internet and portrayed here.