The Collaborative International Dictionary
Scranch
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.]
Wiktionary
scranch
vb. (context transitive English) To grind with the tooth, and with a crackling sound; to craunch.