How do you spell Harrier

Available Definitions:
1)  n. - One of a small breed of hounds, used for hunting hares.
2)  n. - One who harries.
3)  n. - One of several species of hawks or buzzards of the genus Circus which fly low and harry small animals or birds, -- as the European marsh harrier (Circus aerunginosus), and the hen harrier (C. cyaneus).