1. The act of undressing as an expression of sexual exhibitionism which is identified by psychiatrists.
2. A morbid tendency to disrobe in order to provoke useless erotic stimulation in the opposite sex.
3. The act of shedding or molting the outer exoskeleton or cuticle.
5. The shedding of the outer layer of skin or of a shell.

This process is common in many species of animals; including crustaceans, snakes, and insects; not only during early development but also during the adult stages of life.