A medium-large migratory bird of prey, Buteo lagopus, which has feathered legs and feet and breeds in subarctic and arctic areas of both Eurasia and North America.
Origin
Early 19th century.
Definition of rough-legged buzzard in US English:
rough-legged buzzard
noun
A medium-large migratory bird of prey, Buteo lagopus, which has feathered legs and feet and breeds in subarctic and arctic areas of both Eurasia and North America.