The Collaborative International Dictionary of English v.0.48:

Intermezzo \In`ter*mez"zo\, n. [It. See Intermede.] (Mus.)
   An interlude; an intermede. See Intermede.
   [1913 Webster]

WordNet (r) 3.0 (2006):

intermezzo
    n 1: a short movement coming between the major sections of a
         symphony
    2: a short piece of instrumental music composed for performance
       between acts of a drama or opera
    3: a brief show (music or dance etc) inserted between the
       sections of a longer performance [syn: interlude,
       intermezzo, entr'acte]