Definitions for yohimbineyoʊˈhɪm bin
Random House Webster's College Dictionary
an extract of the bark of the yohimbe or rauwolfia tree, used medicinally to oppose the effects of epinephrine.
Origin of yohimbine:
1895–1900; yohimb (e ) + -ine2; perh. orig. formed in G
A tryptamine alkaloid, the active chemical constituent of the medicinal herb Pausinystalia yohimbe: a stimulant and supposed aphrodisiac.
U.S. National Library of Medicine
A plant alkaloid with alpha-2-adrenergic blocking activity. Yohimbine has been used as a mydriatic and in the treatment of ERECTILE DYSFUNCTION. It is also alleged to be an aphrodisiac.