Definition of tenor for English Language Learners. : 1  the highest adult male singing voice; also : a singer who has such a voice. : 2  the general or basic quality or meaning of something.
A bullpen is an area of a baseball field that allows pitchers to warm up before entering a game. The bullpen is usually set to the side at one end of the team's dugout, but there is no rule for where it has to be. The bullpen often receives a lot of attention, especially toward the end of a game, as other pitchers may be called in to relieve the starter.
Freebase(0.00 / 0 votes)Rate this definition: Bullpen. In baseball, the bullpen is the area where relief pitchers warm-up before entering a game. Depending on the ballpark, it may be situated in foul territory along the baselines or just beyond the outfield fence.