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
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More Definitions for Calabar bean
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