xy·lene 
(zī-lēn, zīlēn′) also xy·lol (zīlôl′, -lōl′)
(zī-lēn, zīlēn′) also xy·lol (zīlôl′, -lōl′)n.
1. Any of three colorless flammable isomeric benzene derivatives, C8H10, obtained from wood and coal tar.
2. A mixture of xylene isomers used as a solvent in making lacquers and rubber cement and as an aviation fuel.