Russ.

Proper noun

Russia (countable and uncountable, plural Russias)

1. A transcontinental country in Eastern Europe and North Asia. Official name: Russian Federation. Capital and largest city: Moscow. It borders the Pacific and Arctic Oceans and the Baltic, Black, and Caspian Seas. Part of the Soviet Union from 1917 through 1991.
   • The next stop that we make will be England / Tell all the folks in Russia, and China, too / Don't you know that it's time to get on board? / And let this train keep on riding, riding on through1972, The O'Jays, “Love Train”, in Back Stabbers

   Synonyms:

   Mordor, Orcistan, RF, Rossia, Rossiia, Rossija, Rossiya, Russian Federation, Ruzzia

2. (broadly, historical) The Union of Soviet Socialist Republics (a very common name, although more formally Russia, the RSFSR, was one of several constituent republics of the USSR).
3. (historical) The Russian Empire; the tsarist empire in Russia lasting from 1721 to 1917.
   • Ukraine (“frontier”), the name formerly given to a district of European Russia, now comprising the governments of Kharkov, Kiev, Podolia and Poltava.1911, “Ukraine”, in 1911 Encyclopædia Britannica
4. (dated, historical) Kievan Rus; the medieval East Slavic state centered in Kiev.
   • Ukraine (“frontier”), the name formerly given to a district of European Russia, now comprising the governments of Kharkov, Kiev, Podolia and Poltava.1911, “Ukraine”, in 1911 Encyclopædia Britannica
5. (countable, dated) Any of several East Slavic states descended from Kievan Rus, typically including Russia (Great Russia), Belarus (White Russia) and Ukraine (Little Russia).
   • Or rather if I be attaining a better autocratship than that of the Emperor of all the Russias — the empire over self.1842, George Eliot, Selections from George Eliot's letters, Letter to Cara Bray, page 24

See all 6 meanings of Russia