noun
eastern Old Japanese dialect
Linguistics term referring to the dialect of Old Japanese spoken in the eastern provinces (Azuma) during the Nara period, known from poems in the Man'yōshū.
上代東国方言は、万葉集の東歌などに見られる。
The eastern Old Japanese dialect is found in poems such as the Azuma-uta in the Man'yōshū.
上代日本語 (Old Japanese) is the broader language of the Nara period; 上代東国方言 is specifically its eastern dialect.
Compound of 上代 (ancient times, specifically the Nara period), 東国 (eastern provinces), and 方言 (dialect).