eagle owl

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A large Eurasian owl (Bubo bubo) having brownish plumage and prominent ear tufts.

from The Century Dictionary.

• noun A name of the great horned owl of Europe, Bubo maximus, and hence of other large species of the same genus, as B. virginianus, the great horned owl of North America. See cut under Bubo.
• noun A name of sundry other large owls.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of various Old World large owls of the genus Bubo, especially Bubo bubo, that have prominent ear tufts.