calabar bean









calabar bean


noun

  1. the violently poisonous seed of an African climbing plant, Physostigma venenosum, of the legume family, the active principle of which is physostigmine.

noun

  1. the dark brown very poisonous seed of a leguminous woody climbing plant, Physostigma venenosum of tropical Africa, used as a source of the drug physostigmine

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