Definition of cupola noun from the Oxford Advanced Learner's Dictionary

 

cupola

 noun
noun
BrE BrE//ˈkjuːpələ//
 
; NAmE NAmE//ˈkjuːpələ//
 
 
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a round part on top of a building (like a small dome ) A high cupola of glass and iron crowned the roof. Word Origin mid 16th cent.: Italian, from late Latin cupula ‘small cask or burying vault’, diminutive of cupa ‘cask’.
See the Oxford Advanced American Dictionary entry: cupola