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Definition of bullpen

bullpen

/ˈbʊl.pɛn/
bull · pen

Plural:bullpens
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bullpen Lexical Profile

bullpen Game Scores & Validity

• noun

1

North American An area off the field in a baseball stadium where relief pitchers warm up before entering a game, or the collective roster of a team's relief pitchers.

Example

"The manager called down to the bullpen to have two left-handed pitchers start warming up in the seventh inning."


2

North American A large, open-plan office space where desk-bound employees work together without private offices.

Example

"Junior analysts and interns sat in the noisy central bullpen while senior partners had private offices along the windows."


3

North American A large holding cell in a jail, police station, or courthouse where prisoners are temporarily detained together before a hearing or transfer.

Example

"The defendants waited in the courthouse bullpen until the bailiff called their names for arraignment."


4

A fenced enclosure or pen used for keeping bulls on a farm or ranch.

Example

"The rancher repaired the heavy timber gates around the bullpen before moving the livestock."

Synonyms
View all synonyms for bullpen

Word Origin & Etymology

Originally referring literally to a fenced enclosure for bulls, the term was adopted into baseball jargon in the late 19th century; one popular theory links it to prominent Bull Durham tobacco billboards that frequently overlooked the pitchers' warm-up areas in early ballparks.

Cite this Entry


Wordmom. (2026). Definition of Bullpen. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/bullpen
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