a mixture of hydrocarbons, a colorless, flammable liquid, obtained in the fractional distillation of petroleum and used as a motor fuel and as a solvent for fats and oils in dry cleaning, etc.
See ligroin in American Heritage Dictionary 4
(lĭgˈrō-ĭn)
noun
A volatile, flammable fraction of petroleum, obtained by distillation and used as a solvent.