Definitions
1.noun(usually uncountable) A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.
2.nounCoal tar.
3.nounA solid residual byproduct of tobacco smoke.
4.nounA sailor, because of the traditional tarpaulin clothes.
5.nounBlack tar, a form of heroin.
6.verbTo coat with tar.
7.verbTo besmirch."The allegations tarred his name, even though he was found innocent."