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bull pen

or bullpen

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noun
Baseball.
  1. a place where relief pitchers warm up during a game.
  2. the relief pitchers on a team.
Informal.
  1. a large cell or room, usually next to the courtroom, where prisoners are temporarily held.
  2. 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.
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Origin of bull pen

1800–10, Americanismfor def. 4; 1920–25 for def. 1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use bull pen in a sentence

British Dictionary definitions for bull pen

bullpen
/ (ˈbʊlˌpɛn) /

noun
US informal a large cell where prisoners are confined together temporarily
baseball a part of a baseball field where relief pitchers warm up
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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