noun
Nankaidō; Shikoku region (historical)
Historical name for the region comprising Shikoku and nearby islands, used in the old administrative division system (Gokishichidō).
南海道は、昔の行政区画で四国地方を指す名称だ。
Nankaidō is a name that refers to the Shikoku region in the old administrative division system.
四国 is the modern common name for the Shikoku region, while 南海道 is the historical administrative name.
From 南海 (southern sea) + 道 (circuit, region), one of the seven ancient circuits (Gokishichidō) of Japan.