From WordNet (r) 3.0 (2006) :
ruckle v 1: make a hoarse, rattling sound 2: 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]