- 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.
- a full beard or a man wearing one.
- an exceptionally active or hard-working person.
- Slang: Vulgar.
- a woman's pubic area.
- a term used to refer to 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.
- a native or inhabitant of Oregon, the Beaver State (used as a nickname).
- to work very hard or industriously at something (usually followed by away).
- a piece of plate armor for covering the lower part of the face and throat, worn especially with an open helmet, as a sallet or basinet.
- a piece of plate armor, pivoted at the sides, forming part of a close helmet below the visor or ventail.
- a large amphibious rodent, Castor fiber, of Europe, Asia, and North America: family Castoridae . It has soft brown fur, a broad flat hairless tail, and webbed hind feet, and constructs complex dams and houses (lodges) in rivers
- the fur of this animal
- a burrowing rodent, Aplodontia rufa, of W North America: family Aplodontidae
- a tall hat of beaver fur or a fabric resembling it, worn, esp by men, during the 19th century
- a woollen napped cloth resembling beaver fur, formerly much used for overcoats, etc
- a greyish- or yellowish-brown
- a full beard
- a bearded man
- having the colour of beaver or made of beaver fur or some similar material
- to work industriously or steadily
- a movable piece on a medieval helmet used to protect the lower part of the face
- a member of a Beaver Colony, the youngest group of boys (aged 6–8 years) in the Scout Association
