a long-winged, slender-bodied bird of prey with low quartering flight.
Genus Circus, family Accipitridae: several species
Origin:
mid 16th century (as harrower): from harrow 'harry, rob' (variant of harry). The spelling change in the 17th century was due to association with harrier1
harrier in other Oxford dictionaries
Definition of harrier in the US English dictionary
