noun
the eight districts of feudal Japan
Historical term referring to the eight administrative regions (道) of Japan during the Ritsuryō period: Tōkaidō, Tōsandō, Hokurikudō, San'indō, San'yōdō, Nankaidō, Saikaidō, and Kinai (sometimes counted separately).
律令制下の日本は八道に分けられていた。
Under the Ritsuryō system, Japan was divided into eight districts.