creosote

cre·o·sote

noun \ˈkrē-ə-ˌsōt\

Definition of CREOSOTE

1

: a clear or yellowish flammable oily liquid mixture of phenolic compounds obtained by the distillation of wood tar especially from beech wood and used especially as a disinfectant and as an expectorant in chronic bronchitis

2

: a brownish oily liquid consisting chiefly of aromatic hydrocarbons obtained by distillation of coal tar and used especially as a wood preservative