/yoh him"been/ , n. Pharm.
an alkaloid, C 21 H 26 N 2 O 3 , extracted from the bark of Corynanthe johimbe or Rauwolfia serpentina, used as a selective alpha-adrenergic receptor antagonist: purported to have aphrodisiac properties.
[ 1895-1900; YOHIMB(E) + -INE 2 ; perh. orig. formed in G ]