from The American Heritage® Dictionary of the English Language, 4th Edition
- The medieval Russian state, established c. 862 by Scandinavian traders and warriors led by Rurik, who founded a dynasty at Novgorod. In 882 his successor moved the capital to Kiev, the center of Kievan Russia.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. Any of the medieval East Slavic principalities ruled by this class, especially Kievan Rus.
- n. A person from Rus.
Russian Rus', from Old Russian Rusĭ, group of Vikings, Rus; see Russian.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Russian Русь (Rus’), from Old East Slavic Русь (Rus’), and Byzantine Greek οί Ῥῶς (oi Rhōs). Compare Russ, and see further Etymology of Rus and derivatives. (Wiktionary)