wrinkle

gather or contract into wrinkles or folds; pucker

a slight depression or fold in the smoothness of a surface

“ironing gets rid of most wrinkles”

become wrinkled or crumpled or creased

“This fabric won't wrinkle”

make wrinkled or creased

make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic

“The dress got wrinkled”

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

a minor difficulty

“they finally have the wrinkles pretty well ironed out”