crumple
v 1: fall apart; also used metaphorically: "Negociations broke
down" [syn: {crumble}, {tumble}, {break down}, {collapse}]
2: fold or collapse; "His knees buckled" [syn: {buckle}]
3: to gather something into small wrinkles or folds; "She
puckered her lips," "This material drew after having been
washed in hot water" [syn: {pucker}, {draw}, {rumple}, {cockle},
{knit}]
4: become wrinkled or crumpled or creased; "This fabric won't
wrinkle" [syn: {rumple}, {wrinkle}, {crease}, {crinkle}]