noun
the seven districts of ancient Japan
Historical term referring to the seven major administrative regions (道) of Japan under the Ritsuryō system: Tōkaidō, Tōsandō, Hokurikudō, San'indō, San'yōdō, Nankaidō, and Saikaidō.
律令制下の日本は、七道に区分されていた。
Under the Ritsuryō system, Japan was divided into the seven districts.