castor bean

Noun
  1. The toxic seed of the castor-oil plant;
    Source of castor oil (synset 111710147)
    is a type of: oil-rich seed, oilseed - any of several seeds that yield oil
    is a part of: castor bean plant, castor-oil plant, palma christ, palma christi, ricinus communis - 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

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