D defs.my
Entry 1 sense Webster, 1913

Quinoline

· Quin·o·line · IPA /ˈkwɪnəliːn/
01 n. A nitrogenous base, C9H7N obtained as a pungent colorless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of …
  1. 1.
    A nitrogenous base, C9H7N obtained as a pungent colorless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinoline proper is the type.(Chem.)