a city of central European Russia; formerly capital of both the Soviet Union and Soviet Russia; since 1991 the capital of the Russian Federation
"Moscow, once the capital of the Soviet Union, remains the political heart of modern Russia today."
A federal city, the capital of Russia.
"Moscow is the bustling federal city and capital of Russia where many government buildings are located."
The word Moscow comes from Old East Slavic, originally referring to the Moskva River. This river's name likely derives from a Proto-Slavic root meaning "swamp" or "moisture."