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Definition of Castor bean
1. Noun. The toxic seed of the castor-oil plant; source of castor oil.
Generic synonyms: Oil-rich Seed, Oilseed
Group relationships: Castor Bean Plant, Castor-oil Plant, Palma Christ, Palma Christi, Ricinus Communis
Group relationships: Castor Bean Plant, Castor-oil Plant, Palma Christ, Palma Christi, Ricinus Communis
Definition of Castor bean
1. Noun. The seed of the castor oil plant, ''Ricinus communis''; used in the production of castor oil and of the poison ricin. ¹
¹ Source: wiktionary.com
Medical Definition of Castor bean
1. The seed of the castor bean or castor oil plant, ricinus communis, which yields castor oil. (12 Dec 1998)