bullpen

/ˈbʊlˌpɛn/

/ˈbʊlpɛn/

Other forms: bullpens

The bullpen is the small area on a baseball field where pitchers warm up, throwing practice pitches to a catcher. The bullpen is often situated in the foul zone along the side of the field.

In a professional baseball game, there is always at least one relief pitcher getting ready to replace the starting pitcher. These backup pitchers practice in the bullpen, keeping their throwing arms warmed up and ready. Sometimes the people inside the bullpen are also referred to as "the bullpen." Additionally, people who are confined together in a prison or cell are often said to be in a bullpen.

Definitions of bullpen

1. noun

   a place on a baseball field where relief pitchers can warm up during a game
   type of:

   area

   a part of a structure having some specific characteristic or function
2. noun

   a large cell where prisoners (people awaiting trial or sentence or refugees or illegal immigrants) are confined together temporarily
   synonyms: detention cell, detention centre

   type of:

   cell, jail cell, prison cell

   a room where a prisoner is kept