wrinkle

wrin·kle

(ring'kĕl),

A furrow, fold, or crease in the skin, particularly of a type seen with increasing occurrence as a result of sun exposure or, in perioral skin, cigarette smoking; associated with degeneration of dermal elastic tissue.

wrinkle

(rĭng′kl) [AS. gewrinclian, to wind]

1. A crevice, furrow, or ridge in the skin.

2. To make creases or furrows, as in the skin by habitual frowning.