to fasten/to button/to buckle/to latch/to invert a hollowed object/to cover with the hollowed part of an object/button/knot/to knock/to smash/to spike (a ball)/to arrest/to detain/to set right/to deduct/to intercept/to request advice/(after numeral) reduced to (90% etc)/fig. to tag unfair label onto sb/to besmirch