Wrinkle
Part of speech: noun
Definition: A small furrow, ridge or crease in an otherwise smooth surface. A line or crease in the skin, especially when caused by age or fatigue. A fault, imperfection or bug especially in a new system or product; typically, they will need to be ironed out.
Part of speech: verb
Definition: (transitive) To make wrinkles in; to cause to have wrinkles. (intransitive) To pucker or become uneven or irregular.
Rumple
Part of speech: verb
Definition: To make wrinkled.