Definition of portico noun from the Oxford Advanced American Dictionary

 

portico

 noun
noun
NAmE//ˈpɔrt̮ɪˌkoʊ//
 
(pl. porticoes or porticos)(formal)
 
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a roof that is supported by columns, especially one that forms the entrance to a large building Guests gathered under the classical portico of the hotel.
See the Oxford Advanced Learner's Dictionary entry: portico