THESAURUS
Rimple
cocker, cockle, corrugate, corrugation, crankle, crease, crimp, crimple, crinkle, crumple, fold, furrow, knit, knot, plica, pucker, purse, ridge, ripple, rivel, ruck, ruckle, rumple, screw, scrunch, shirr, wimple, wrinkle
ROGET THESAURUS
Rimple
Fold
N
fold, plicature, plait, pleat, ply, crease, tuck, gather, flexion, flexure, joint, elbow, double, doubling, duplicature, gather, wrinkle, rimple, crinkle, crankle, crumple, rumple, rivel, ruck, ruffle, dog's ear, corrugation, frounce, flounce, lapel, pucker, crow's feet, plication, folded, fluted, pleated.
VB
fold, double, plicate, plait, crease, wrinkle, crinkle, crankle, curl, cockle up, cocker, rimple, rumple, flute, frizzle, frounce, rivel, twill, corrugate, ruffle, crimple, crumple, pucker, turn down, double down, down under, tuck, ruck, hem, gather.