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" [syn: pucker, rumple, cockle, knit]
4: become wrinkled or crumpled or creased; "This fabric won't
wrinkle" [syn: rumple, wrinkle, crease, crinkle]