quinaldine

from The Century Dictionary.

• noun A base, α-methylquinoline, used in the preparation of certain artificial dyestuffs. Also chinaldine.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A colorless liquid of a slightly pungent odor, C9H6N.CH3, first obtained as a condensation product of aldehyde and aniline, and regarded as a derivative of quinoline; -- called also methyl quinoline.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry An oily liquid, α-methylquinoline, derived from coal tar, used in the manufacture of pharmaceuticals and as a sedative for fish.