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

 

mansard

 noun
noun
BrE BrE//ˈmænsɑːd//
 
; NAmE NAmE//ˈmænsɑːrd//
 
(also mansard roof)(specialist)
 
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a roof with a double slope in which the upper part is less steep than the lower part Word Origin mid 18th cent.: from French mansarde, named after F. Mansart (1598-1666), French architect.
See the Oxford Advanced American Dictionary entry: mansard