Alternative form of tar boil

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

plural of coal-tar (alternative spelling of coal tars).

plural of coal tar

Alternative spelling of coal tar

plural of Tar Heel

plural of Jack Tar

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