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definitions

castor-oil plant

[kas-ter-oil, kah-ster-]

noun

a tall plant, Ricinus communis, of the spurge family, cultivated for its ornamental foliage and having poisonous seeds that are the source of castor oil.

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Nearby words

  1. castor,
  2. castor and pollux,
  3. castor bean,
  4. castor oil,
  5. castor sugar,
  6. castoreum,
  7. castrate,
  8. castrati,
  9. castration,
  10. castration complex

Origin of castor-oil plant

First recorded in 1835–45
Also called castor bean.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for castor-oil plant

castor-oil plant

noun

a tall euphorbiaceous Indian plant, Ricinus communis, cultivated in tropical regions for ornament and for its poisonous seeds, from which castor oil is extractedAlso called (US and Canadian): castor bean
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012