D defs.my
Entry 4 senses Webster, 1913

Mezzanine

/mĕz'-ən-ēnˌ/ · Mez·za·nine · IPA /ˈmɛzəˌnin/
01 n. Same as Entresol.
  1. 1.
    Same as Entresol.(Arch.) See: Entresol
  2. 2.
    A flooring laid over a floor to bring it up to some height or level.
  3. 3.
    A floor under the stage, from which various contrivances, as traps, are worked.(Theat.)
  4. 4.
    The lowest balcony in a theater, or the forward part of the first balcony.