- Noun. 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.
- Noun. The amount abated; that which is taken away by way of reduction; deduction; decrease; a rebate or discount allowed.
- Noun. (heraldry) A mark of dishonor on an escutcheon; any figure added to the coat of arms tending to lower the dignity or station of the bearer.
- Noun. (legal) The entry of a stranger, without right, into a freehold after the death of the last possessor, before the heir or devisee.