Aquila

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A constellation in the Northern Hemisphere and the Milky Way near Aquarius and Serpens Cauda.

Century Dictionary and Cyclopedia

1. n. In ornithology, a genus of birds established by Brisson in 1760, but having no characters by which it can be exactly defined. The name has been loosely applied to eagles and other large diurnal raptorial birds which have no tooth of the beak. It is now restricted and somewhat definitely applied to eagles having booted tarsi, that is, having the shank more or less completely feathered. Such are the golden eagle, A. chrysaetus, of Europe and North America; the spotted eagle, A. nœvia, of Asia and Europe; the imperial eagle, A. heliaca, of the same region; the Russian eagle, A. mogilnik, etc. See cut under eagle.
2. n. A northern constellation situated in the Milky Way, nearly south of Lyra, and containing the bright star Altair. It has for its outline the figure of a flying eagle carrying in its talons the boy Antinoüs, the page of the emperor Hadrian. See cut, p. 284.
3. n. [lowercase; pl. aquilæ (-lē).] A reading-desk in the form of eagle.

Wiktionary

1. n. A taxonomic genus within the family Accipitridae. Circumscription and placement of the genus will depend on taxonomic point of view.
2. n. astronomy A summer constellation of the northern sky, said to resemble an eagle. It includes the star Altair.
3. n. An early Christian, the husband of Priscilla.

GNU Webster's 1913

1. n. (Zoöl.) A genus of eagles.
2. n. (Astron.) A northern constellation southerly from Lyra and Cygnus and preceding the Dolphin; the Eagle.

WordNet 3.0

1. n. a constellation in the Milky Way near Cygnus; contains the star Altair
2. n. the provincial capital of the Abruzzi region in central Italy
3. n. a genus of Accipitridae