sarmatian

from The Century Dictionary.

• Of or pertaining to Sarmatia, an ancient region extending from the Volga vaguely westward, identified poetically with Poland; pertaining to the inhabitants of this region.
• noun A member of one of the ancient tribes, probably of Median affinities, which wandered in southern Russia, Hungary, and elsewhere. The Sarmatians became merged in other peoples.
• noun In geology, the uppermost stage of the Miocene Tertiary in the Vienna basin.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to Sarmatia, or its inhabitants, the ancestors of the Russians and the Poles.