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castor bean

noun

Definition of castor bean

  1. :  the very poisonous seed of the castor-oil plant; also :  castor-oil plant

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First Known Use of castor bean

1819

Medical Dictionary

castor bean

play
noun cas·tor bean \ˈkas-tər-\

Medical Definition of castor bean

  1. :  the very poisonous seed of the castor-oil plant; also :  castor-oil plant

Learn More about castor bean

  1. Britannica.com: Encyclopedia article about castor bean

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castor bean

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