wrinkle

v. crease; become creased

n. crease; fold; trick, maneuver (Slang)

A wrinkle is a ridge or crease of a surface. It usually refers to folds on fabric or clothes, or on the skin of an organism; the folds are generally random and do not exhibit any repeating pattern. In skin or other foldable material a wrinkle or fold may be permanent if the material is folded the same way each time.
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Wrinkles small folds of skin in sheep, especially merino, that are susceptible to staining and wetness and therefore to blowfly strike. [more]Wrinkle - Community and Resources

Noun
1. a slight depression in the smoothness of a surface; "his face has many lines"; "ironing gets rid of most wrinkles"
(synonym) furrow, crease, crinkle, seam, line
(hypernym) depression, impression, imprint
(hyponym) crow's foot, crow's feet, laugh line
(part-holonym) skin, tegument, cutis
(derivation) furrow, crease
2. a minor difficulty; "they finally have the wrinkles pretty well ironed out"
(hypernym) difficulty
3. a clever method of doing something (especially something new and different)
(hypernym) method
Verb
1. gather or contract into wrinkles or folds; pucker; "purse ones's lips"
(synonym) purse
(hypernym) contract
(derivation) furrow, crease, crinkle, seam, line
2. make wrinkles or creases into a smooth surface; "The dress got wrinkled"
(synonym) ruckle, crease, crinkle, scrunch, scrunch up, crisp
(hypernym) fold, fold up, turn up
(hyponym) pucker, rumple, cockle, crumple, knit
(derivation) furrow, crease, crinkle, seam, line
3. make wrinkled or creased; "furrow one's brow"
(synonym) furrow, crease
(hypernym) fold, fold up, turn up
(derivation) furrow, crease, crinkle, seam, line
4. become wrinkled or crumpled or creased; "This fabric won't wrinkle"
(synonym) rumple, crumple, crease, crinkle
(hypernym) fold, fold up
(derivation) furrow, crease, crinkle, seam, line

(v. t.)
To contract into furrows and prominences; to make a wrinkle or wrinkles in; to corrugate; as, wrinkle the skin or the brow.
  

(v. t.)
Hence, to make rough or uneven in any way.
  

(v. i.)
To shrink into furrows and ridges.
  

(n.)
hence, any roughness; unevenness.
  

(n.)
A winkle.
  

(n.)
A small ridge, prominence, or furrow formed by the shrinking or contraction of any smooth substance; a corrugation; a crease; a slight fold; as, wrinkle in the skin; a wrinkle in cloth.
  

(n.)
A notion or fancy; a whim; as, to have a new wrinkle.