Etymologically

Etymology and origin of the English word bullpen

Confidence
Established
Formation
Compound
First attested
1809 Horry and Weems, Life of General F. Marion
Ultimate origins
Middle English buleOld French penne
Etymology tree
inherited borrowed derived
English bull
English bullpen
From the same root
English bulldog ← bull

Pronunciation

Etymology

It is formed from English bull + pen, also spelled with a hyphen.[2][3][4] Wilton notes that the combination had long been used literally for a place to keep bulls.[5]

Earliest recorded meaning

A pen of felled pine trees used to hold captured Tories as prisoners: 1809, in Horry and Weems's Life of General F. Marion.[6][5][3] Etymonline dates the word to 1820, in the sense "pen for bulls".[2]

Semantic evolution

In the early 19th century bullpen became American slang for a jail or holding area,[5][6] common in American Civil War camps for prisoners held temporarily;[2] the AHD says it earlier meant a stockade or exercise area for prisoners.[7] The sense lives on in a large holding cell where prisoners wait to go into court.[3][8][9] In baseball the word first named a roped-off area in foul territory or the outfield for the cheap standing crowd, as in the Cincinnati Enquirer of 1877, more than a decade before relief pitchers were allowed.[5] The pitchers' warm-up area is recorded from about 1910 according to Wilton,[5] but only from 1915 according to Etymonline, which derives it from the prison sense.[2] Wilton thinks it came instead from the area for the cheap crowd, where the warm-up area was often later placed, and that it was helped along by the Bull Durham tobacco signs common on outfield fences around 1910.[5] From the pitchers' area the word came to mean a team's relief pitchers as a group.[3] It was also the name of a children's ball game, recorded from 1857 and chiefly in the Midland;[10] Etymonline describes it as a baseball-like game of the late 19th century.[2] Later American slang applied it to an open office area full of desks.[9]

Timeline

  • 1809 – an enclosure for holding prisoners.[6][3]
  • 1820 – a pen for bulls.[2]
  • 1857 – a children's ball game.[10]
  • 1877 – in baseball, an area for spectators with cheap tickets.[5]
  • 1880 – a holding cell in a court or jail.[9]
  • c. 1910 – the area where relief pitchers warm up.[5] Etymonline dates this sense to 1915.[2]
  • 1983 – an open office area with rows of desks.[9]

Meanings

Noun

  1. In baseball, the area where relief pitchers warm up before entering a game.[3][2]
  2. The relief pitchers of a baseball team as a group: Their bullpen let a three-run lead slip away.[3]
  3. A large holding cell where prisoners wait until they are brought into court.[3][8][9]
  4. (US slang) An open office area where many people work at desks.[9]
  5. (US regional, old-fashioned) A children's ball game in which players try to hit those inside a pen with a ball.[10]
  6. (archaic) An enclosure, as of logs, used as a temporary place of confinement.[3][6]

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ Gove, Philip Babcock, ed. (1961), Webster's Third New International Dictionary of the English Language, Unabridged, Springfield, Mass.: G. & C. Merriam
  5. ^ a b c d e f g h Wilton, Dave, Wordorigins.org, wordorigins.org, p. "bullpen", 1 November 2023
  6. ^ a b c d Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com
  7. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  8. ^ a b Garner, Bryan A., ed. (2004), Black's Law Dictionary, 8th ed., St. Paul, Minn.: Thomson West
  9. ^ a b c d e f Dalzell, Tom; Victor, Terry, eds. (2013), The New Partridge Dictionary of Slang and Unconventional English, 2nd ed., London: Routledge
  10. ^ a b c Cassidy, Frederic G. & Joan Houston Hall (eds.) (1985–2002), Dictionary of American Regional English, vols I–IV, Cambridge, Mass.: Belknap Press of Harvard University Press
Cite this entry

“Bullpen.” Etymologically, 31 Oct. 2026, etymologically.com/en/bullpen. Accessed 1 Nov. 2026.

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