The Collaborative International Dictionary of English v.0.48:

Scrunch \Scrunch\, v. t. & v. i. [Cf. Scranch, Crunch.]
   To scranch; to crunch. --Dickens.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scrunch
    n 1: a crunching noise
    v 1: make a noise typical of an engine lacking lubricants [syn:
         crump, thud, scrunch]
    2: sit on one's heels; "In some cultures, the women give birth
       while squatting"; "The children hunkered down to protect
       themselves from the sandstorm" [syn: squat, crouch,
       scrunch, scrunch up, hunker, hunker down]
    3: make wrinkles or creases on a smooth surface; make a pressed,
       folded or wrinkled line in; "The dress got wrinkled"; "crease
       the paper like this to make a crane" [syn: wrinkle,
       ruckle, crease, crinkle, scrunch, scrunch up,
       crisp]