ORDEAL BEAN
\ɔːdˈi͡əl bˈiːn], \ɔːdˈiəl bˈiːn], \ɔː_d_ˈiə_l b_ˈiː_n]\
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dark brown highly poisonous seed of the calabar-bean vine; source of physostigmine and used in native witchcraft
By Princeton University