noun
1. : an oil of low specific gravity or relatively low boiling point (as below about 200° C): as
a. : a flammable product obtained by the distillation of coal tar and containing aromatic hydrocarbons, phenols, and pyridine
b. : a somewhat similar product recovered from wash oil after the scrubbing of coke-oven gas and used as a source of benzene and other aromatic hydrocarbons
c. : naphtha or other flammable petroleum distillate
2. : a crude petroleum having a high Baumé gravity (as 30° or higher)