What is "parvoline"

Parvoline \Par"vo*line\, n. (Chem.) A liquid base, C9H13N, of the pyridine group, found in coal tar; also, any one of the series of isomeric substances of which it is the type.

n. 1 (context organic compound English) A base of the pyridine group, found in coal tar. 2 (context organic compound English) Any of the series of isometric substances of which parvoline is the type.