Source : Webster's Revised Unabridged Dictionary (1913)

Hydrocarbostyril \Hy`dro*car`bo*sty"ril\, n. [Hydro-, 2 +
   carbostyril.] (Chem.)
   A white, crystalline, nitrogenous hydrocarbon, {C9H9NO},
   obtained from certain derivatives of cinnamic acid and
   closely related to quinoline and carbostyril.