/ ˈrɪŋkl; NAmE / noun , verb
■ noun
1.
a line or small fold in your skin, especially on your face, that forms as you get older :
There were fine wrinkles around her eyes.
2.
[ usually pl. ] a small fold that you do not want in a piece of cloth or paper
SYN crease
■ verb
1.
wrinkle (sth) (up) to make the skin on your face form into lines or folds; to form lines or folds in this way :
[ vn ]
She wrinkled up her nose in distaste.
He wrinkled his brow in concentration.
[ v ]
His face wrinkled in a grin.
2.
to form raised folds or lines in an untidy way; to make sth do this :
[ v ]
Her stockings were wrinkling at the knees.
[also vn ]
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WORD ORIGIN
late Middle English : origin obscure, possibly a back-formation from the Old English past participle gewrinclod sinuous (of which no infinitive is recorded).