n.dark brown highly poisonous seed of the calabar-bean vine; source of physostigmine and used in native witchcraft
同义词：ordeal bean
英汉双解大词典
Calabar bean/ˌkæləˈbɑː, ˈkæləˌbɑː/
1.
N（名词）
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 卡拉巴豆