Source : Webster's Revised Unabridged Dictionary (1913)

Benzonaphthol \Ben`zo*naph"thol\, n. Also Benzonaphtol
\Ben`zo*naph"tol\ . [Benzoin + naphthol.] (Chem.)
   A white crystalline powder used as an intestinal antiseptic;
   beta-naphthol benzoate.