back 1 New HSK word(s): HSK6 扣 → → → → + kou4 to fasten; to button; button; buckle; knot; to arrest; to confiscate; to deduct (money); discount; to knock; to smash or spike (a ball); to cover (with a bowl etc); fig. to tag a label on sb 1 Old HSK word(s): B VA 扣* → kou4 upside down/ buckle/ button