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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.
(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
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.
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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