mansard : Idioms & Phrases

• noun a hip roof having two slopes on each side
  mansard.
  

WordNet

Man"sard roof"

Etymology

So called from its inventor, Fran&cced;ois Mansard, or Mansart, a distinguished French architect, who died in 1666.

Definitions

1. (Arch.) A hipped curb roof; that is, a roof having on all sides two slopes, the lower one being steeper than the upper one.

Webster 1913