the central part of a country, historically, commonly known as the capital city or the main region, where an emperor or other ruler resides / something within a country

Short for 中国地方 (Chūgoku chihō): the Chūgoku region of Japan

a surname

(education) graduate student (abbr. 院生)

a private university

everything

(colloquial) current boyfriend

candied sweet potato

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all