The Collaborative International Dictionary of English v.0.48:

Bravura \Bra*vu"ra\, n. [It., (properly) bravery, spirit, from
   bravo. See Brave.] (Mus.)
   A florid, brilliant style of music, written for effect, to
   show the range and flexibility of a singer's voice, or the
   technical force and skill of a performer; virtuoso music.
   [1913 Webster]

   Aria di bravura[It.], a florid air demanding brilliant
      execution.
      [1913 Webster]