開かい口こう部ぶMeaningsNoun1. apertureKanji used開open口mouth部sectionPitch accentかいこうぶComposed of開かい口こうopening; aperture (e.g. camera); opening one's mouth; beginning to speak; open; broadNoun部ぶdepartment (in an organization, company, etc.); division; bureau; faculty; club (at a school, university, etc.); team; part; portion; region; area; …Noun