CASTOR

Castor, genus Castor

(noun) type genus of the Castoridae: beavers

beaver, castor

(noun) a hat made with the fur of a beaver (or similar material)

caster, castor

(noun) a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable

caster, castor

(noun) a shaker with a perforated top for sprinkling powdered sugar

Castor, Alpha Geminorum

(noun) a multiple star with 6 components; second brightest in Gemini; close to Pollux

Source: WordNet® 3.1


Etymology 1

Noun

castor (plural castors)

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

A hat made from the fur of the beaver.

A caster; a container with perforated cap for sprinkling (e.g. pepper-castor).

A heavy quality of broadcloth for overcoats.

Castoreum (bitter exudate of mature beavers).

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

Etymology 2

Noun

castor (uncountable)

(mineral) A variety of petalite found in Elba.

Synonyms

• castorite

Anagrams

• Castro, Croats, acrost, actors, co-star, costar, scroat, scrota, tarocs

Proper noun

Castor

(Greek mythology) One of the Dioscuri

(star) A double star in the constellation Gemini; alpha (α) Geminorum.

A village and civil parish in city of Peterborough district, Cambridgeshire, England (OS grid ref TL1298).

A town in Alberta, Canada. From French castor (“beaver”).

A village in Bienville Parish, Louisiana, United States. From French castor (“beaver”).

A surname.

Anagrams

• Castro, Croats, acrost, actors, co-star, costar, scroat, scrota, tarocs

Source: Wiktionary


Cas"tor, n. Etym: [L. castor the beaver, Gr.

1. (Zoöl.)

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

2. Castoreum. See Castoreum.

3. A hat, esp. one made of beaver fur; a beaver. I have always been known for the jaunty manner in which I wear my castor. Sir W. Scott.

4. A heavy quality of broadcloth for overcoats.

Cast"or, n.

Definition: See Caster, a small wheel.

Cas"tor, n. Etym: [L.] (Astron.)

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

Cas"tor, Cas"tor*ite, n. Etym: [The minerals castor and pollux were so named because found together on the island of Elba. See Castor and Pollux.] (Min.)

Definition: A variety of the mineral called petalite, from Elba.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

13 June 2025

AIRPLANE

(noun) an aircraft that has a fixed wing and is powered by propellers or jets; “the flight was delayed due to trouble with the airplane”


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