[From Calabar, on the Gulf of Guinea, in Africa.] The seed of Physostigma venenosum, a climbing leguminous plant, called also the Ordeal-bean, administered by the natives to persons suspected of witchcraft.
1876. Harley, Mat. Med., 654.
Hence Calabarine, an alkaloid found in the Calabar bean (Syd. Soc. Lex.).
1875. H. C. Wood, Therap. (1879), 310.