bow hand

from The Collaborative International Dictionary of English v.0.48

Bow hand \Bow" hand`\
   1. (Archery) The hand that holds the bow, i. e., the left
      hand.
      [1913 Webster]

            Surely he shoots wide on the bow hand. --Spenser.
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   2. (Mus.) The hand that draws the bow, i. e., the right hand.
      [1913 Webster]