Wordnet 3.0
VERB (1)
1. 
 make a crushing noise; 
- Example: "his shoes were crunching on the gravel"[syn: crunch, scranch, scraunch, crackle]
WordNet (r) 3.0 (2006):
scraunch
    v 1: make a crushing noise; "his shoes were crunching on the
         gravel" [syn: crunch, scranch, scraunch, crackle]