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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.

Calabar bean

/ ˌkæləˈbɑː; ˈkæləˌbɑː /

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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Word History and Origins

Origin of Calabar bean1

1875–80; named after Calabar, Nigeria

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