1. areas in baseball stadiums where relief pitchers warm up during games
Usage: baseball
2. large open office spaces where many employees work together
Usage: business; informal
3. temporary holding areas or detention facilities
Usage: law enforcement

Examples

• The relief pitchers were warming up in the bullpens before the ninth inning.
• Both teams’ bullpens were active during the close game.
• The new office design eliminated private offices in favor of bullpens.
• Many employees prefer bullpens because they encourage collaboration.
• The suspects were held in the courthouse bullpens awaiting their hearings.
• Police officers escorted the arrestees to the bullpens for processing.