wrinkle [ˈrɪŋkəl]

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¹ wrinkle noun

• a small line or fold that appears on your skin as you grow older—usually plural
• a small fold in the surface of clothing, paper, etc. —usually plural
• a surprising or unexpected occurrence in a story or series of events

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² wrinkle verb

• to develop wrinkles
• to cause (something) to develop wrinkles