creosote (en)

(noun) a clear or yellowish flammable oily liquid mixture of phenolic compounds obtained by the distillation of tar derived from wood and especially from beech wood / (noun) a brownish oily liquid consisting chiefly of aromatic hydrocarbons obtained by distillation of coal tar and used especially as a wood preservative / (noun) a dark brown or black flammable tar deposited from especially wood smoke on the walls of a chimney / (noun) creosote bush / (verb) to treat with creosote / (noun) a resinous desert shrub (Larrea tridentata) of the caltrop family found in the southwestern United States and Mexico