| Toluene (n.) A hydrocarbon, C6H5.CH3, of the aromatic series, homologous with benzene, and obtained as a light mobile colorless liquid, by distilling tolu balsam, coal tar, etc. |
| toluene methylbenzene | a colorless flammable liquid obtained from petroleum or coal tar, used as a solvent for gums and lacquers and in high-octane fuels |