n. In Italian arch., an upper story of a building, or a portion of such a story, open to the air, at least on one side, and frequently on all, for the purpose of affording a view of the country and providing a place for enjoying the cool evening breeze. The belvedere is sometimes a sort of lantern or kiosk erected on the roof.n. In France, a summer-house on an eminence in a park or garden.