Source : Webster's Revised Unabridged Dictionary (1913)

Grunter \Grunt"er\, n.
   1. One who, or that which, grunts; specifically, a hog.
      ``Bristled grunters.'' --Tennyson.

   2. (Zo["o]l.) One of several American marine fishes. See {Sea
      robin}, and {Grunt}, n., 2.

   3. (Brass Founding) A hook used in lifting a crucible.

Source : WordNet®

grunter
     n 1: a person who grunts
     2: domestic swine [syn: {hog}, {pig}, {squealer}, {Sus scrofa}]