Definition of Castor

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

Exact synonyms: Alpha Geminorum
Group relationships: Gemini
Generic synonyms: Multiple Star

2. Noun. A shaker with a perforated top for sprinkling powdered sugar.
Exact synonyms: Caster
Generic synonyms: Shaker

3. Noun. A pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable.
Exact synonyms: Caster
Generic synonyms: Roller

4. Noun. A hat made with the fur of a beaver (or similar material).
Exact synonyms: Beaver
Generic synonyms: Fur Hat

5. Noun. Type genus of the Castoridae: beavers.
Exact synonyms: Genus Castor
Generic synonyms: Mammal Genus
Group relationships: Castoridae, Family Castoridae
Member holonyms: Beaver

Definition of Castor

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

2. n. See Caster, a small wheel.

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

4. n. A variety of the mineral called petalite, from Elba.

Definition of Castor

1. caster [n -S] - See also: caster

Lexicographical Neighbors of Castor

casting vote
casting wax
castle
Castle's intrinsic factor
castled
Castleman's disease
castleman disease
castles
castle in Spain
castle in the air
castling
castock
castocks
castoff
castoffs
Castor
castor-oil plant
castoreum
castoreums
Castoridae
castories
Castoroides
castors
castory
castor bean
castor bean
castor bean plant
Castor canadensis
Castor fiber
castor oil

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