Definition of abates:
(v) :
(transitive) To lessen (something) in force or intensity; to moderate.
(v) :
(transitive) To reduce (something) in amount or size.
(v) :
(transitive) To cut away or hammer down (material from metalwork, a sculpture, etc.) in such a way as to leave a figure in relief.
(v) :
(transitive) To lower (something) in price or value.
(v) :
(transitive) (law) To make (a writ or other legal document) void; to nullify.
(v) :
(transitive) (law) To put an end to (a nuisance).