ordeal bean

English Thesaurus

1. dark brown highly poisonous seed of the calabar-bean vine; source of physostigmine and used in native witchcraft (noun.plant)

hypernym	:	bean,
definition	:	any of various seeds or fruits that are beans or resemble beans (noun.plant)

part meronym	:	calabar-bean vine, physostigma venenosum,
definition	:	tropical African woody vine yielding calabar beans (noun.plant)