castor
1
[ kas-ter, kah-ster ]
/ ˈkæs tər, ˈkɑ stər /
noun
Also castoreum.
a brownish, unctuous substance with a strong, penetrating odor, secreted by certain glands in the groin of the beaver, used in medicine and perfumery.
a hat made of beaver or rabbit fur.
a heavy woolen cloth used mainly for coats.
a beaver.
Origin of castor
1
1350–1400; Middle English < Latin < Greek
kástōr beaver
Words nearby castor
Definition for castor (2 of 3)
Definition for castor (3 of 3)
Castor
[ kas-ter, kah-ster ]
/ ˈkæs tər, ˈkɑ stər /
noun Astronomy.
a star of the second magnitude in the constellation Gemini, the more northerly of the two bright stars in this constellation.
Origin of Castor
named after
Castor; see
Castor and Pollux
Example sentences from the Web for castor
British Dictionary definitions for castor (1 of 3)
castor
1
/ (ˈkɑːstə) /
noun
the brownish aromatic secretion of the anal glands of a beaver, used in perfumery and medicine
the fur of the beaver
a hat made of beaver or similar fur
a less common name for beaver 1 (def. 1)
Word Origin for castor
C14: from Latin, from Greek
kastōr beaver
British Dictionary definitions for castor (2 of 3)
British Dictionary definitions for castor (3 of 3)
Castor
/ (ˈkɑːstə) /
noun
the second brightest star, Alpha Geminorum, in the constellation Gemini: a multiple star consisting of six components lying close to the star Pollux. Distance: 52 light years
classical myth See Castor and Pollux
Scientific definitions for castor
Castor
[ kăs′tər ]
A bright multiple star in the constellation Gemini, with a combined apparent magnitude of 0.08. Scientific name: Alpha Geminorum.