/ ˈkrɪŋkl; NAmE / verb , noun
■ verb
to become covered with or to form a lot of thin folds or lines, especially in skin, cloth or paper :
[ v ]
He smiled, his eyes crinkling .
Her face crinkled up in a smile.
The pages crinkled and curled and turned to ashes in the fire.
[also vn ]
■ noun
a very thin fold or line made on paper, cloth or skin
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WORD ORIGIN
late Middle English : related to Old English crincan bend, yield, fall in battle , of Germanic origin.