Pyrrol
Pronunciation : Pyr"rol
Part of Speech : n.
Etymology : [Gr. oleum oil.] (Chem.)
Definition : Defn: A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red.
Source : Webster's Unabridged Dictionary, 1913