Meaning of WRINKLE in English
[noun] [C] - a small line in the skin caused by old age, or a small fold in clothFine lines and wrinkles tend to appear around the eyes and mouth as you get older.Do anti-wrinkle creams really work?There are some wrinkles in the back of your skirt where you've been sitting down.(figurative) There are still a lot of wrinkles to iron out (= problems to solve) before the agreement can be signed.
Cambridge English vocab. Кембриджский английский словарь. 2012