Rimple

from The Collaborative International Dictionary of English v.0.48

Rimple \Rim"ple\, n. [AS. hrimpele, or rimpel. See Rumple.]
   A fold or wrinkle. See {Rumple}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Rimple \Rim"ple\, v. t. & i. [imp. & p. p. {Rimpled}; p. pr. &
   vb. n. {Rimpling}.]
   To rumple; to wrinkle.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

28 Moby Thesaurus words for "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

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