Crumple \Crum"ple\ (kr[u^]m"p'l), v. t. [imp. & p. p. Crumpled (-p'ld); p. pr. & vb. n. Crumpling (-pl?ng).]

[Dim. fr. crump, a.]

To draw or press into wrinkles or folds; to crush together; to rumple; as, to crumple paper.

They crumpled it into all shapes, and diligently scanned every wrinkle that could be made. --Addison.

Source: Webster's Revised Unabridged Dictionary (1913)