Abatement

The act of abating, or the state of being abated; a lessening, diminution, or reduction; removal or putting an end to; as, the abatement of a nuisance is the suppression thereof.

The amount abated; that which is taken away by way of reduction; deduction; decrease; a rebate or discount allowed.

A mark of dishonor on an escutcheon.

The entry of a stranger, without right, into a freehold after the death of the last possessor, before the heir or devisee.

the act of abating; "laws enforcing noise abatement"