Meaning of bull pen
- a place where relief pitchers warm up during a game.
- the relief pitchers on a team.
- a large cell or room, usually next to the courtroom, where prisoners are temporarily held.
- a large room in an office occupied by many employees.
- any temporary or crowded quarters, as sleeping quarters in a lumber camp.
- a pen for a bull or bulls.
- bullpen (Thesaurus)