Scranch

from WordNet (r) 3.0 (2006)

scranch
    v 1: make a crushing noise; "his shoes were crunching on the
         gravel" [syn: {crunch}, {scranch}, {scraunch}, {crackle}]

from The Collaborative International Dictionary of English v.0.48

Scranch \Scranch\, v. t. [imp. & p. p. {Scranched}; p. pr. & vb.
   n. {Scranching}.] [Cf. D. schransen to eat greedily, G.
   schranzen. Cf. {Crunch}, {Scrunch}.]
   To grind with the teeth, and with a crackling sound; to
   craunch. [Prov. Eng. & Colloq. U. S.]
   [1913 Webster]