Etymology: (1300–50; earlier mout (with intrusive -l-; cf. fault , assault ), ME mouten, OE -mūtian to change < L mūtāre to change; see mutate)
Definition of 'molt'
Princeton's WordNet
1. (verb)molt, molting, moult, moulting, ecdysis periodic shedding of the cuticle in arthropods or the outer skin in reptiles
2. (verb)shed, molt, exuviate, moult, slough cast off hair, skin, horn, or feathers "our dog sheds every Spring"