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]

Easton's 1897 Bible Dictionary:

Aquila
   eagle, a native of Pontus, by occupation a tent-maker, whom Paul
   met on his first visit to Corinth (Acts 18:2). Along with his
   wife Priscilla he had fled from Rome in consequence of a decree
   (A.D. 50) by Claudius commanding all Jews to leave the city.
   Paul sojourned with him at Corinth, and they wrought together at
   their common trade, making Cilician hair-cloth for tents. On
   Paul's departure from Corinth after eighteen months, Aquila and
   his wife accompanied him to Ephesus, where they remained, while
   he proceeded to Syria (Acts 18:18, 26). When they became
   Christians we are not informed, but in Ephesus they were (1 Cor.
   16:19) Paul's "helpers in Christ Jesus." We find them afterwards
   at Rome (Rom. 16:3), interesting themselves still in the cause
   of Christ. They are referred to some years after this as being
   at Ephesus (2 Tim. 4:19). This is the last notice we have of
   them.


Hitchcock's Bible Names Dictionary (late 1800's):

Aquila, an eagle