Nouns

(n)gangrene, sphacelus, slough1necrotic tissue; a mortified or gangrenous part or mass
(n)slough1any outer covering that can be shed or cast off (such as the cast-off skin of a snake)
(n)slough2a hollow filled with mud
(n)slough2a stagnant swamp (especially as part of a bayou)

Verbs

(v)shed, molt, exuviate, moult, sloughcast off hair, skin, horn, or feathers“our dog sheds every Spring”