Calabar bean

noun Cal·a·bar bean \ ˈka-lə-ˌbär- \

Definition of Calabar bean

: the dark brown highly poisonous leguminous seed of a tropical west African woody vine (Physostigma venenosum) that is used as a source of physostigmine and was used formerly as an ordeal poison in African witchcraft trials

Origin and Etymology of calabar bean

Calabar, Nigeria


Medical Dictionary

Calabar bean

noun Cal·a·bar bean \ ˈkal-ə-ˌbär- \

medical Definition of Calabar bean

: the dark brown poisonous seed of a tropical African woody vine of the genus Physostigma (P. venenosum) that is used as a source of physostigmine

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