Meaningbutton · knock · rap · strike · tapOn'yomiコウKun'yomiたた.く · ひか.えるCommon compounds (3)扣える ひかえるto be in a close relationship (e.g. as a backer, etc.)扣除 こうじょsubtraction; deduction (e.g. tax); subsidy扣え ひかえwaiting one's turn