Source : Webster's Revised Unabridged Dictionary (1913)

Halve \Halve\, v. t.
   Of a hole, match, etc., to reach or play in the same number
   of strokes as an opponent.

Halve \Hal"ve\, n.
   A half. [Obs.] --Chaucer.

Halve \Halve\, v. t. [imp. & p. p. {Halved}; p. pr. & vb. n.
   {Halving}.] [From {Half}.]
   1. To divide into two equal parts; as, to halve an apple; to
      be or form half of.

            So far apart their lives are thrown From the twin
            soul that halves their own.           --M. Arnold.

   2. (Arch.) To join, as two pieces of timber, by cutting away
      each for half its thickness at the joining place, and
      fitting together.

Source : WordNet®

halve
     v : divide by two; divide into halves; "Halve the cake"