Source : Webster's Revised Unabridged Dictionary (1913)

Lyra \Ly"ra\, n. [L. lyra, Gr. ?. See {Lyre}.]
   1. (Astron.) A northern constellation, the Harp, containing a
      white star of the first magnitude, called Alpha Lyr[ae],
      or Vega.

Source : WordNet®

Lyra
     n : a small constellation in the northern hemisphere near Cygnus
         and Draco; contains the star Vega