castor-oil plant

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

  1. 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.

Origin of castor-oil plant

First recorded in 1835–45

Words Nearby castor-oil plant Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use castor-oil plant in a sentence

British Dictionary definitions for castor-oil plant

castor-oil plant

  1. a tall euphorbiaceous Indian plant, Ricinus communis, cultivated in tropical regions for ornament and for its poisonous seeds, from which castor oil is extracted: Also 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