English

Definition of dormer window noun from the Oxford Advanced Learner's Dictionary

 

dormer window

 noun
noun
BrE BrE//ˌdɔːmə ˈwɪndəʊ//
 
; NAmE NAmE//ˌdɔːrmər ˈwɪndoʊ//
 
(also dormer
BrE BrE//ˈdɔːmə(r)//
 
; NAmE NAmE//ˈdɔːrmər//
 
)
 
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a vertical window in a room that is built into a sloping roof