(US, sports) Acronym of Automobile Racing Club of America, a stock car auto racing sanctioning body in the United States, founded in 1952.

plural of Arca

A surname.

Understood by only a few. / (by extension) Obscure, mysterious. / Requiring secret or mysterious knowledge to understand. / Extremely old (e.g. interpretation or knowledge), and possibly irrelevant.

A regional unit of Greece in the central and southeastern Peloponnese. Tripoli is the capital and main city with a population over 47,000.

(figuratively) An ideal region of rural and idyllic contentment; a pastoral utopia.

Pertaining to an arcade. / Furnished with arcades. / (literature) Ideally rustic or pastoral.

Specialized knowledge that is mysterious to the uninitiated.

plural of arcanum

(architecture) A row of arches. / (architecture) A covered passage, usually with shops on both sides. / (video games) An establishment that runs coin-operated games.