A place on a baseball field where relief pitchers can warm up during a game.
2.
A large cell where prisoners (people awaiting trial or sentence or refugees or illegal immigrants) are confined together temporarily. Synonyms:detention cell, detention centre.
... the hospitals after Bull Run. Young bravery—the Zouaves—the multicolored guard regiments—and a romance in every death!" She laid one stained hand over the other, fingers still wide. "But here in this blackened horror they call the 'seat of war'—this festering bullpen, choked with dreary regiments, all alike, all in filthy blue—here individuals vanish, men vanish. The schoolgirl dream of man dies here forever. Only unwashed, naked duty remains; and its inspiration, man—bloody, dirty, vermin-covered, terrible—sometimes; and sometimes whimpering, ... — Special Messenger • Robert W. Chambers
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