1. (使)变皱;(使)起皱纹
If something crinkles or if you crinkle it, it becomes slightly creased or folded.

2. 褶痕;皱纹
Crinkles are small creases or folds.

1. a slight depression in the smoothness of a surface

e.g. his face has many lines
ironing gets rid of most wrinkles

Synonym: wrinklefurrowcreaseseamline