Word parts change

bull + pen

Pronunciation change

Noun change

Singular
bullpen

Plural
bullpens

 
A bull in a bullpen (sense 1)
 
Players warming up in a bullpen (sense 2)
 
Office bullpen (sense 3)
  1. (countable) A bullpen is an enclosed area used to hold bulls.
  2. (countable) (baseball) A bullpen is an enclosed area for pitchers to warm up in during a game.
  3. (countable) A bullpen is an open seating arrangement where colleagues can communicate openly.