Nouns

(n)beaver, beaver furthe soft brown fur of the beaver
(n)beavera full beard
(n)dress hat, high hat, opera hat, silk hat, stovepipe, top hat, topper, beavera man's hat with a tall crown; usually covered with silk or with beaver fur
(n)beavera movable piece of armor on a medieval helmet used to protect the lower face
(n)beaver, castora hat made with the fur of a beaver (or similar material)
(n)beaverlarge semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges

Verbs

(v)beaver, beaver awaywork hard on something