an alkaloid, C21H26N2O3, extracted from the bark of Corynanthe johimbe or Rauwolfia serpentina, used as a selective alpha-adrenergic receptor antagonist: purported to have aphrodisiac properties.
Origin: 1895–1900; yohimb(e)+ -ine2; perh. orig. formed in G
yo·him·bine (yō-hĭm'bēn') n. A poisonous alkaloid, C21H26N2O3, derived from the bark of a tree, Corynanthe yohimbe, and formerly used as an aphrodisiac, a local anesthetic, and a mydriatic.
[New Latin yohimbe, specific epithet of Corynanthe yohimbe, species of tree from which it is derived (of Cameroonian Bantu origin; akin to Duala (Bantu language of Cameroon) djombe) + -ine2.]
Main Entry: yo·him·bine Pronunciation: yO-'him-"bEn, -b&n Function: noun : an alkaloidC21H26N2O3 that is a weak blocker of alpha-adrenergic receptors and has been used as an aphrodisiac called also quebrachine