Wordnet 3.0
NOUN (1)
1.
a person who abates a nuisance;
The Collaborative International Dictionary of English v.0.48:
Abator \A*ba"tor\ ([.a]*b[=a]t"[~e]r), 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.
[1913 Webster]
WordNet (r) 3.0 (2006):
abator
n 1: a person who abates a nuisance
Bouvier's Law Dictionary, Revised 6th Ed (1856):
ABATOR is, 1st, he who abates or prostrates a nuisance; 2, he who having no
right of entry, gets possession of the freehold to the prejudice of an heir
or devisee, after the time when the ancestor died, and before the heir or
devisee enters. See article Abatement. Litt. Sec. 897; Perk. Sec. 383; 1
Inst. 271; 2 Prest. Abst. 296. 300. As to the consequences of an abator
dying in possession, See Adams' Eject. 43.