Definition of preys:
(n) :
A living thing, usually an animal, that is eaten by another living thing.
(n) :
That which is or may be seized by animals to be devoured.
(n) :
A person or thing given up as a victim.
(v) :
(intransitive) To act as a predator.
(n) :
The victim of a disease.
(n) :
(archaic) Anything, such as goods, etc., taken or got by violence; something taken by force from an enemy in war.