The Collaborative International Dictionary of English v.0.48:

Aquila \Aq"ui*la\, n.; pl. Aquil[ae]. [L., an eagle.]
   1. (Zool.) A genus of eagles.
      [1913 Webster]

   2. (Astron.) A northern constellation southerly from Lyra and
      Cygnus and preceding the Dolphin; the Eagle.
      [1913 Webster]

   Aquila alba [L., white eagle], an alchemical name of
      calomel. --Brande & C.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Aquila
    n 1: a constellation in the Milky Way near Cygnus; contains the
         star Altair
    2: the provincial capital of the Abruzzi region in central Italy
       [syn: Aquila, L'Aquila, Aquila degli Abruzzi]
    3: a genus of Accipitridae [syn: Aquila, genus Aquila]