The Collaborative International Dictionary of English v.0.48:

Toluene \Tol"u*ene\, n. [Tolu + benzene.] (Chem.)
   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.; -- called
   also methyl benzene, phenyl methane, etc.
   [1913 Webster]