Mezzanine
Pronunciation : Mez"za*nine
Part of Speech : n.
Etymology : [F. mezzanine, It. mezzanino, fr. mezzano middle, fr. mezzo middle, half. See Mezzo.] (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
Source : Webster's Unabridged Dictionary, 1913