Molt (4)
I believe the answer is:
shed
'molt' is the definition.
(I know that molt is a more specific form of the action shed)
This is all the clue.
(Other definitions for shed that I've seen before include "Get rid of - hut" , "Discard (something)" , "Get rid of -- moult" , "Cast - shine" , "Remove clothes in small hut" .)