mansard
From Longman Dictionary of Contemporary EnglishRelated topics: Constructionmansardman‧sard /ˈmænsɑːd $ -ɑːrd/ (also mansard roof) noun [countable] technical TBCa roof whose lower part slopes more steeply than its upper partExamples from the Corpusmansard• Houses with a mansard roof can not be converted, as the first floor rooms are already in the roof space.• The building is covered by a reinforced concrete roof of mansard profile, which houses the seventh storey.