tol·u·ene 
(tŏly-ēn′) also tol·u·ol (-ôl′, -ōl′, -ŏl′)
(tŏly-ēn′) also tol·u·ol (-ôl′, -ōl′, -ŏl′)n.
A colorless flammable aromatic liquid, C7H8, obtained from coal tar or petroleum and used in aviation fuel and other high-octane fuels, in dyestuffs, explosives, and as a solvent for gums and lacquers. Also called methylbenzene.
[TOLU (from which it was originally obtained) + -ENE.]