The Collaborative International Dictionary of English v.0.48:

Forehand \Fore"hand`\, n.
   1. All that part of a horse which is before the rider.
      --Johnson.
      [1913 Webster]

   2. The chief or most important part. --Shak.
      [1913 Webster]

   3. Superiority; advantage; start; precedence.
      [1913 Webster]

            And, but for ceremony, such a wretch . . .
            Had the forehand and vantage of a king. --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Forehand \Fore"hand`\, a.
   Done beforehand; anticipative.
   [1913 Webster]

         And so extenuate the forehand sin.       --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

forehand
    adj 1: (of racket strokes) made with palm facing direction of
           stroke [syn: forehand(a), forehanded] [ant:
           backhand(a), backhanded]
    n 1: (sports) a return made with the palm of the hand facing the
         direction of the stroke (as in tennis or badminton or
         squash) [syn: forehand, forehand stroke, forehand
         shot]

Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "forehand":
   anterior, anticipative, anticipatory, beforetime, bright and early,
   chief, early, first, fore, forehanded, foremost, foresighted,
   forward, front, frontal, head, headmost, in good time, leading,
   prevenient, primary, prime