What is an eightball?

An eightball typically refers to a small, round ball used in the game of billiards, also known as pool. It is typically black and has the number 8 printed on it. In the game of pool, the eightball is the most important ball as it must be pocketed last to win the game.

Additionally, an eightball can also refer to a small, round object containing a mixture of drugs, usually heroin or cocaine, that is sold illegally on the street. These small bags are typically black or another dark color and are commonly used for narcotics or other illegal substances.

In a more casual context, an "eightball" can also refer to a decision-making tool used by shaking a ball with various answers inside and then receiving a random answer to a yes or no question based on which answer is displayed.