单词	Calabar bean
释义	Calabar bean noun Cal·​a·​bar bean ˈka-lə-ˌbär-  : 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 Word History Etymology Calabar, Nigeria First Known Use 1853, in the meaning defined above Medical Definition Calabar bean noun Cal·​a·​bar bean ˈkal-ə-ˌbär-  : 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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