ABATOR

ABA'TOR, noun A person who enters into a freehold on the death of the last possessor, before the heir or devisee

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abator. Abator, n. one who abates, or enters on an estate before the heir

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A‐ba″tor (ȧ‐bāt″ẽr), n. (Law) (a) One who abates a nuisance. (b) A person who, without right, enters into a freehold on the death of the last possessor, before the heir or devisee. Blackstone.