日本にほん通つうMeaningsNoun1. Japan hand (someone very knowledgeable about Japan)Kanji used日sun本book通pass throughComposed of日本にほんJapanNoun通つうauthority; expert; connoisseur; well-informed person; counter for messages, letters, notes, documents, etc.; understanding (esp. of male-female relations); tact; insight; supernatural powers; magical powersNoun