Gambrel
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A gambrel is a usually symmetrical two-sided roof with two slopes on each side. The upper slope is positioned at a shallow angle while the lower slope is quite steep. This design provides the advantages of a sloped roof while maximizing head space on the building's upper level. The name comes the Medieval Latin word gamba meaning hoof, or leg of an animal.
The gambrel roof is associated with Colonial architecture. The horror writer H. P. Lovecraft often mentioned such roofs in descriptions to indicate an ancient setting.