Great Russian

Short definition from Wiktionary

Adjective

1. 1
   Of or pertaining to Great Russia.
2. 2
   Of or pertaining to Great Russians, the language of Great Russia, as opposed to Little Russia, White Russia, etc.

Noun

1. 1
   A person from, or an inhabitant of, Great Russia.

Proper noun

1. 1
   The Russian language, especially when (possibly erroneously) considered to be mutually intelligible with the Ukrainian (Little Russian) and Belarusian (White Russian) languages.