单词	Calabar bean
释义	Calabar bean /ˈkaləbɑː ˌbiːn / noun The poisonous seed of a tropical West African climbing plant, containing physostigmine and formerly used for tribal ordeals. The plant is Physostigma venosum, family Leguminosae. Julian was interested in medicinal plants, particularly the Calabar bean whose active principle, physostigmine, was first isolated by the German chemists Jobst and Hesse in 1864.... But since physostigmine could be isolated only from the Calabar bean, the drug was not readily available. But since physostigmine could be isolated only from the Calabar bean, the drug was not readily available.
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