Dictionary/公館こうかんKoukan公館 (Koukan) is a Japanese noun meaning “official residence”.Meaningsnounofficial residenceKanji in 公館公public館buildingRelated words君you公園(public) park公平fairness公official公安public peace主人公protagonist公表official announcement旅館ryokan公開opening to the public図書館library公務員public employee館内inside a library, museum, cinema, etc.