biter

from WordNet (r) 3.0 (2006)

biter
    n 1: someone who bites

from The Collaborative International Dictionary of English v.0.48

Biter \Bit"er\, n.
   1. One who, or that which, bites; that which bites often, or
      is inclined to bite, as a dog or fish. "Great barkers are
      no biters." --Camden.
      [1913 Webster]

   2. One who cheats; a sharper. [Colloq.] --Spectator.
      [1913 Webster]