Beaver vs. Castor — What's the Difference?

Beavers are large, semiaquatic rodents in the genus Castor native to the temperate Northern Hemisphere. There are two extant species: the North American beaver (Castor canadensis) and the Eurasian beaver (C. fiber).

An oily, brown, odorous substance obtained from glands in the groin of the beaver and used as a perfume fixative. Also called castoreum.

Either of two large semiaquatic rodents, Castor canadensis of North America or C. fiber of Eurasia, having thick brown fur, webbed hind feet, a broad flat tail, and sharp incisors used for gnawing bark and felling trees, with which they construct dams and underwater lodges.

A hat made of beaver fur or an imitation.

The fur of a beaver.

A heavy wool fabric used especially for overcoats.

A top hat originally made of the underfur of a beaver.

Variant of caster.

A napped wool fabric, similar to felt, used for outer garments.

One that casts

Vulgar Slang The female genitals.

Also cas·tor (kăstər) A small wheel on a swivel, attached under a piece of furniture or other heavy object to make it easier to move.

Offensive Slang A woman or girl.

A small bottle, pot, or shaker for holding a condiment.

A piece of armor attached to a helmet or breastplate to protect the throat or lower face.

A stand for a set of condiment containers.

The visor on a helmet.

Greek Mythology One of the Dioscuri.

Of or relating to a beaver or beavers

A binary star in the constellation Gemini, approximately 46 light years from Earth and of roughly equal brightness with Pollux.

Constructed by beavers

A hat made from the fur of the beaver.

To work diligently and energetically.

A heavy quality of broadcloth for overcoats.

To spot a beard in a game of beaver.

Castoreum (bitter exudate of mature beavers).

To work hard.

Any of various nymphalid butterflies of the genus Ariadne, of Africa and Asia.

To cut a continuous ring around a tree that one is felling.

(mineral) A variety of petalite found in Elba.

(backgammon) After being doubled, to immediately double the stakes again, a move that keeps the doubling cube on one’s own side of the board.

Alternative spelling of caster, especially in its senses

(countable) A semiaquatic rodent of the genus Castor, having a wide, flat tail and webbed feet.

A pivoting roller attached to the bottom of furniture to allow it to be moved.

The fur of the beaver.

A container with a perforated cap for sprinkling its contents, especially salt, pepper, etc.

(countable) A hat, of various shapes, made from a felted beaver fur (or later of silk), fashionable in Europe between 1550 and 1850.

A genus of rodents, including the beaver. See Beaver.

(North American) Beaver pelts as an article of exchange or as a standard of value.

Castoreum. See Castoreum.

Beaver cloth, a heavy felted woollen cloth, used chiefly for making overcoats.

A hat, esp. one made of beaver fur; a beaver.

A brown colour, like that of a beaver.

A heavy quality of broadcloth for overcoats.

A move in response to being doubled, in which one immediately doubles the stakes again, keeping the doubling cube on one’s own side of the board.

See Caster, a small wheel.

Senseid|en|member of the youngest wing of the Scout movement}} {{alternative case form of Beaver.

The northernmost of the two bright stars in the constellation Gemini, the other being Pollux.

Senseid|en|part of a helmet}} {{alternative spelling of bevor.

A variety of the mineral called petalite, from Elba.

An amphibious rodent, of the genus Castor.

A multiple star with 6 components; second brightest in Gemini; close to Pollux

The fur of the beaver.

A shaker with a perforated top for sprinkling powdered sugar

A hat, formerly made of the fur of the beaver, but now usually of silk.

A pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable

Beaver cloth, a heavy felted woolen cloth, used chiefly for making overcoats.

A hat made of beaver fur or similar material

A man's beard.

Type genus of the Castoridae: beavers

The hair on a woman's pubic area; - vulgar.

A woman; - vulgar and offensive.

A person who works enthusiastically and diligently; - used especially in the phrase eager beaver.

That piece of armor which protected the lower part of the face, whether forming a part of the helmet or fixed to the breastplate. It was so constructed (with joints or otherwise) that the wearer could raise or lower it to eat and drink.

The soft brown fur of the beaver

A full beard

A man's hat with a tall crown; usually covered with beaver or silk

A movable piece of armor on a medieval helmet used to protect the lower face

A hat made of beaver fur or similar material

Large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges

Work hard on something