a large, amphibious rodent of the genus Castor, having sharp incisors, webbed hind feet, and a flattened tail, noted for its ability to dam streams with trees, branches, etc.

the fur of this animal.

a flat, round hat made of beaver fur or a similar fabric.

a tall, cylindrical hat for men, formerly made of beaver and now of a fabric simulating this fur. Compare opera hat , silk hat , top hat .

Informal . a full beard or a man wearing one.

Informal . an exceptionally active or hard-working person.

Slang

Vulgar

a woman's pubic area.

Offensive . a woman.

Textiles .

a cotton cloth with a thick nap, used chiefly in the manufacture of work clothes.

(formerly) a heavy, soft, woolen cloth with a thick nap, made to resemble beaver fur.

( initial capital letter ) a native or inhabitant of Oregon, the Beaver State (used as a nickname).

British . to work very hard or industriously at something (usually fol. by away ).