beaver (Noun) — Large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges.
beaver (Noun) — The soft brown fur of the beaver.
beaver (Noun) — A full beard.
beaver (Noun) — A man's hat with a tall crown; usually covered with silk or with beaver fur.
beaver (Noun) — A movable piece of armour on a medieval helmet used to protect the lower face.
beaver (Noun) — A hat made with the fur of a beaver (or similar material).
beaver (Noun) — Vulgar term for a woman's pubic hair or genitals.
beaver (Noun) — A native or resident of Oregon.
beaver (Verb) — Work hard on something.