Wrin″kle, n. [OE. wrinkil, AS. wrincle; akin to OD. wrinckel, and prob. to Dan. rynke, Sw. rynka, Icel. hrukka, OHG. runza, G. runzel, L. ruga. ����.]
1. 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. “The wrinkles in my brows.” Shak.
Within I do not find wrinkles and used heart, but unspent youth. Emerson.
2. hence, any roughness; unevenness.
Not the least wrinkle to deform the sky. Dryden.
3. [Perhaps a different word, and a dim. AS. wrenc a twisting, deceit. Cf. Wrench, n.] A notion or fancy; a whim; as, to have a new wrinkle.