a poisonous yellow liquid, CHNO, prepared by treating benzene with nitric acid, used in making aniline, as a solvent, etc.
See nitrobenzene in American Heritage Dictionary 4
(nīˌtrō-bĕnˈzēnˌ, -bĕn-zēnˈ)
noun
A poisonous organic compound, C6H5NO2, either bright yellow crystals or an oily liquid, having the odor of almonds and used in the manufacture of aniline, insulating compounds, and polishes.