tar
n//tæːɹ//tjära, beckbyxa
(usually, uncountable) A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.
(uncountable) A solid residual byproduct of tobacco smoke.
Coal tar.
(slang, dated) A sailor, because of the traditional tarpaulin clothes.
(transitive) To coat with tar.