1. Rus - Noun
2. Rus - Proper noun
the medieval Russian state established by Scandinavian traders in the 9th century; the capital was first in Novgorod and then in Kiev
Source: WordNetAccording to al-Masudi, the qağan is said to have given his assent on the condition that the Rus' give him half of the booty. Source: Internet
All Rus' principalities were forced to submit to Mongol rule and became part of the Golden Horde empire, some of which lasted until 1480. Source: Internet
After a final resurgence under the rule of Vladimir II Monomakh (1113–1125) and his son Mstislav (1125–1132), Kievan Rus' finally disintegrated into separate principalities following Mstislav's death. Source: Internet
A mob killed the Christian Fyodor and his son Ioann (later, after the overall christening of Kievan Rus, people came to regard these two as the first Christian martyrs in Rus', and the Orthodox Church set a day to commemorate them, July 25). Source: Internet
As this process gained momentum, it was accompanied by the rise of both Rus' and Lithuanian identity in the fifteenth century. Source: Internet
Another school of thought essentializes the report of Yahya of Antioch that, prior to the Danube campaign, the Byzantines and the Rus' were at war. Source: Internet