CRUMPLING
Verb
crumpling
present participle of crumple
Noun
crumpling (plural crumplings)
The act by which something crumples.
A crumpled shape or structure.
Source: Wiktionary
CRUMPLE
Crum"ple (krm"p'l), v. t. [imp & p. p. Crumpled (-p'ld); p. pr. & vb.
n. Crumpling (-plng).] Etym: [Dim. fr. crump, a.]
Definition: 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.
Crum"ple, v. i.
Definition: To contract irregularly; to show wrinkless after being crushed
together; as, leaves crumple.
Source: Webster’s Unabridged Dictionary 1913 Edition