牛栏

bullpen \bull"pen`\ (b[.u]l"p[e^]n`), n. (Baseball)
1. an open area in a baseball stadium, off the playing field,
where pitchers may warm up by throwing a number of trial
pitches before playing.
[PJC]

2. [collective] the relief pitchers on a baseball team.
Contrasted with {starters}.
[PJC]