castor-oil plant

noun

Definition of castor-oil plant 

: a tropical Old World herb (Ricinus communis) widely grown as an ornamental or for its oil-rich castor beans

First Known Use of castor-oil plant

1836, in the meaning defined above

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The first known use of castor-oil plant was in 1836

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More Definitions for castor-oil plant

castor-oil plant

noun

Medical Definition of castor-oil plant 

: a tropical Old World herb of the genus Ricinus (R. communis) widely grown as an ornamental or for its oil-rich castor beans that are a source of castor oil

More from Merriam-Webster on castor-oil plant

Britannica.com: Encyclopedia article about castor-oil plant

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occurring twice a year or every two years

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