[noun] [C] - a small additional floor between esp. the bottom floor of a building and the next floor upYou can look down from the mezzanine into the ground floor lobby.The shoe department is on the mezzanine floor.(US) In a theatre, sports stadium, etc., the mezzanine is the front few rows of seats of the level, or all of the level, above ground.
MEZZANINE
Meaning of MEZZANINE in English
Cambridge English vocab. Кембриджский английский словарь. 2012