Calabar bean


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Cal·a·bar bean

 (kăl′ə-bär)
n.
The poisonous seed of a tropical western African woody vine (Physostigma venenosum) in the pea family, the source of physostigmine.

[After Calabar, a town of southeast Nigeria.]

Calabar bean

(ˌkæləˈbɑː; ˈkæləˌbɑː)
n
1. (Plants) 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
2. (Pharmacology) 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

Cal′abar bean`


n.
the poisonous seed of an African climbing plant, Physostigma venenosum, of the legume family, the active principle of which is physostigmine.
[1875–80; after Calabar]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.calabar bean - dark brown highly poisonous seed of the calabar-bean vine; source of physostigmine and used in native witchcraft
calabar-bean vine, Physostigma venenosum - tropical African woody vine yielding calabar beans
bean - any of various seeds or fruits that are beans or resemble beans
References in periodicals archive ?
The main clue to his fate came when a lab report showed his intestine contained traces of the African calabar bean, a powerful poison used by adherents of voodoo.
Botanists at Kew Gardens in South West London identified the calabar bean which was found in Adam's intestine.
By the late 1800s physostigmine had been isolated from the Calabar bean and was widely used in the form of eyedrops for the treatment of glaucoma.