noun

1. (usually uncountable) A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.

2. Coal tar.

3. A solid residual byproduct of tobacco smoke.

Synonyms: Jack Tar

verb

1. To coat with tar.

2. To besmirch.

   “The allegations tarred his name, even though he was found innocent.”