Definition: an irregular fold in an otherwise even surface (as in cloth)
Main entry: rumple, crumple, pucker, cockle, knit
Definition: to gather something into small wrinkles or folds
Usage: She puckered her lips
Main entry: pucker, ruck, ruck up
Definition: become wrinkled or drawn together
Usage: her lips puckered
Main entry: tuck, pucker, gather
Definition: draw together into folds or puckers