Jisho

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Noun
1. within the borders of a country; domestic soil
Noun
2. inland; interior
Noun
3. Japan proper (as opposed to its overseas colonies); homeland; homeHistorical term
Noun
4. "mainland" Japan (i.e. Honshū)used by people in Hokkaido and Okinawa
Place
5. Naichi
Wikipedia definition
6. Mainland Japanis a term to distinguish the area of Japan from its outlying territories. It was an official term in the pre-war period, distinguishing Japan and the colonies in East Asia. After the end of World War II, the term became uncommon, but still is used as an unofficial term to distinguish the area of Japan from Okinawa or Hokkaidō. The literal Japanese meaning might best be translated as inner Japan or inner lands.
Read “Mainland Japan” on English Wikipedia
Read “内地” on Japanese Wikipedia
Read “Mainland Japan” on DBpedia

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