The DICT Development Group

  Mezzanine \Mez"za*nine\, n. [F. mezzanine, It. mezzanino, fr.
     mezzano middle, fr. mezzo middle, half. See Mezzo.]
     1. (Arch.)
        (a) Same as Entresol.
        (b) A partial story which is not on the same level with
            the story of the main part of the edifice, as of a
            back building, where the floors are on a level with
            landings of the staircase of the main house.
            [1913 Webster]
  
     2. A flooring laid over a floor to bring it up to some height
        or level.
        [Webster 1913 Suppl.]
  
     3. Also
  
     mezzanine floor. (Theat.) A floor under the stage, from
        which various contrivances, as traps, are worked.
        [Webster 1913 Suppl.]
  
     4. The lowest balcony in a theater, or the forward part of
        the first balcony.
        [PJC]

  mezzanine
       n 1: first or lowest balcony [syn: first balcony]
       2: intermediate floor just above the ground floor [syn: mezzanine
          floor]