Source : Webster's Revised Unabridged Dictionary (1913)

Champ \Champ\, v. t. [imp. & p. p. {Champed}; p. pr. & vb. n.
   {Champing}.] [Prob, of Scand. orgin; cf. dial. Sw. k["a]msa
   to chew with difficulty, champ; but cf. also OF. champier,
   champeyer, champoyer, to graze in fields, fr. F. champ field,
   fr. L. campus. Cf. {Camp}.]
   1. To bite with repeated action of the teeth so as to be
      heard.

            Foamed and champed the golden bit.    --Dryden.

   2. To bite into small pieces; to crunch. --Steele.