definition of
crumple

[1] #1 crumple v. [crumble, tumble, break down, collapse] fall apart; "the building crumbled after the explosion"; "Negotiations broke down". wn

[2] #2 crumple v. [buckle] fold or collapse; "His knees buckled". wn

[3] #3 crumple v. [pucker, rumple, cockle, knit] to gather something into small wrinkles or folds; "She puckered her lips". wn

[4] #4 crumple v. [rumple, wrinkle, crease, crinkle] become wrinkled or crumpled or creased; "This fabric won't wrinkle". wn