wrinkle

a slight depression in the smoothness of a surface; "his face has many lines"; "ironing gets rid of most wrinkles"

a minor difficulty; "they finally have the wrinkles pretty well ironed out"

a clever method of doing something (especially something new and different)

gather or contract into wrinkles or folds; pucker; "purse ones's lips"

make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; "The dress got wrinkled"; "crease the paper like this to make a crane"

make wrinkled or creased; "furrow one's brow"

become wrinkled or crumpled or creased; "This fabric won't wrinkle"