Sports a boy who retrieves balls that have gone out of play, as in tennis and baseball, or a boy in charge of the extra balls used in practice, as in basketball and football
- A male attendant on a tennis court who collects the ball when it is out of play.
- A boy or man who is in charge of the extra balls used in practice or those that are out of play, especially in baseball.
(plural ball boys)
- (sports) A person, usually male, responsible for retrieving balls from the area of play, and returning them to the players.