/ ˈbʊlpen; NAmE / noun ( NAmE )
1.
the part of a baseball field where players practise pitching (= throwing) before the game
2.
extra pitchers (= players who throw the ball) in a baseball team who are used, if necessary, to replace the usual pitchers :
The team's bullpen is solid this year.
3.
a type of large office which is open-plan (= it does not have walls dividing the office area)
4.
a room where prisoners wait before they go into the court for their trial