left field

from WordNet (r) 3.0 (2006)

left field
    n 1: the piece of ground in the outfield on the catcher's left;
         "the batter flied out to left" [syn: {left field},
         {leftfield}, {left}]
    2: the fielding position of the player on a baseball team who is
       expected to field balls in the left third of the outfield
       (looking from home plate) [syn: {left field}, {leftfield}]

from The Collaborative International Dictionary of English v.0.48

left field \left` field"\, leftfield \left`field"\n. (Baseball)
   the part of the outfield on the catcher's or batter's left.

   Syn: left.
        [WordNet 1.5]