What is the meaning of Wrinkle?

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.

A twist on something existing; a novel difference.

To make wrinkles in; to cause to have wrinkles.

To pucker or become uneven or irregular.

To develop irreversibly wrinkles; to age.

To sneer (at).

A winkle

Source: wiktionary.org