Caucasia

English Proper noun Caucasus The "mesopontic" geographic region of land which lies between the Black Sea Black and Caspian Sea Caspian Seas, consisting of both the North Caucasus Region and Transcaucasia, and traversed by the Caucasus Mountains; the northern boundary of this region is roughly on a line extending from the Don River Don to the Volga River Volga River deltas, and the southern boundary generally coincident with the lower course of the Aras River. Derived terms en Ciscaucasia