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A poisonous, ornamental shrub (Ricinus communis) native to Africa, having palmately lobed leaves and widely cultivated for its seeds, which yield an oil of commercial and medicinal value.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) 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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a tall plant, Ricinus communis, of the spurge family, cultivated for its ornamental foliage and poisonous seeds that yield castor oil. Also called castor bean.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||castor-oil plant - large shrub of tropical Africa and Asia having large palmate leaves and spiny capsules containing seeds that are the source of castor oil and ricin; widely naturalized throughout the tropics|
castor bean - the toxic seed of the castor-oil plant; source of castor oil
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