Castor Oil Definition

noun
A colorless or yellowish oil from castor beans, used as a cathartic, lubricant, etc.
Webster's New World
adjective
Made of or relating to castor oil.
Wiktionary

Other Word Forms of Castor Oil

Noun

Singular:
castor oil
Plural:
castor oils

Origin of Castor Oil

  • Possibly from a former use as a substitute for castor in medicine

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

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castor oil