Castor (noun) Definition, Meaning & Examples

noun
  1. a brownish, unctuous substance with a strong, penetrating odor, secreted by certain glands in the groin of the beaver, used in medicine and perfumery.
  2. a hat made of beaver or rabbit fur.
  3. a heavy woolen cloth used mainly for coats.
  4. a beaver.
noun Astronomy.
  1. a star of the second magnitude in the constellation Gemini, the more northerly of the two bright stars in this constellation.
noun
  1. the brownish aromatic secretion of the anal glands of a beaver, used in perfumery and medicine
  2. the fur of the beaver
  3. a hat made of beaver or similar fur
  4. a less common name for beaver 1 (def. 1)
noun
  1. a variant spelling of caster (def. 2), caster (def. 3)
noun
  1. 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
  2. classical myth See Castor and Pollux
    Castor (noun) Definition, Meaning & Examples

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