1. China
when read as "ちゅうごく"
2. Chūgoku region (western part of Honshu comprising the prefectures of Okayama, Hiroshima, Yamaguchi, Tottori and Shimane)
when read as "ちゅうごく"
3. central part of a country; main region
when read as "ちゅうごく"
4. province of the second lowest rank (ritsuryo system)