Castor Definition

kăstər
castors
noun
castors
A beaver.
Webster's New World
A sexual gland of the beaver containing a strong-smelling, oily substance used as a scent in trapping and in making perfumes.
Webster's New World
A hat of beaver or rabbit fur.
Webster's New World
A heavy wool fabric used especially for overcoats.
American Heritage
Webster's New World
Synonyms:
pronoun

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

Wiktionary

(Greek mythology) One of the Dioscuri.

Wiktionary

Other Word Forms of Castor

Noun

Singular:
castor
Plural:
castors

Origin of Castor

  • Named from Greek mythology; see Castor and Pollux. The name pollux was given to another mineral with which it was always found.

    From Wiktionary

  • From Old French castor (“beaver”), from Latin castor (“beaver”).

    From Wiktionary

  • Middle English from Latin beaver from Greek kastōr

    From American Heritage Dictionary of the English Language, 5th Edition

  • Latin from Greek Kastōr twin of Pollux

    From American Heritage Dictionary of the English Language, 5th Edition

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