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cupola cu·po·la (kyōō'pə-lə)
A cup-shaped or domelike structure.
A small ornamental structure rising from a roof. Cupolas are often dome shaped.
in architecture, small dome, often resembling an overturned cup, placed on a circular, polygonal, or square base or on small pillars or a glassed-in lantern. It is used to crown a turret, roof, or larger dome. The inner vault of a dome is also a cupola.