Definition of harriers:
(n) :
Any of several birds of prey in the genus Circus of the subfamily Circinae which fly low over meadows and marshes and hunt small mammals or birds.
(n) :
A runner, specifically, a cross country runner.
(n) :
A kind of dog used to hunt hares; a harehound.
(n) :
One who harries.
(n) :
A medium-sized dog breed of the hound class, used for hunting hares by trailing them.
(n) :
A surname.