(roofing) A small bubble or blister in the flood coat of an aggregate-surfaced built-up membrane

Alternative spelling of coal tar

plural of Tar Heel

An illicit drug formed from the incomplete acetylation of morphine, containing a variable percentage of heroin.

(chiefly US) A difficult, abstract problem that worsens as one attempts to handle it; a "sticky" situation, especially one where attempts to make it better only make it worse.

coal tar

Alternative form of tarpit

plural of tar baby

A municipality of Croatia.

plural of tar boil