'center field' definitions:

Definition of 'center field'

From: WordNet
noun
The piece of ground in the outfield directly ahead of the catcher; "he hit the ball to deep center" [syn: center field, centerfield, center]
noun
The fielding position of the player on a baseball team who is expected to field balls in the central third of the outfield [syn: center field, centerfield]

Definition of 'center field'

From: GCIDE
  • centerfield \cen"ter*field"\, center field \cen"ter field"\(s[e^]n"t[~e]r*f[=e]ld") n. (Baseball) The part of the outfield directly ahead of the catcher.
  • Syn: center. [WordNet 1.5]