Definition of spays:
(v) :
(transitive) To destroy or remove the ovaries or uterus (of a female animal) to prevent pregnancy.
(n) :
The act of spaying an animal.
(v) :
Alternative form of spae (to foretell or divine) [(Scotland, archaic) To divine; foretell.]
(n) :
Rare spelling of spayard. [(obsolete) The hart in its third year; a young deer]