A gable is the triangular part of a house's exterior wall that supports a pointed or peaked roof. Gothic-style houses are well known for their many gables.
Houses and buildings with pitched roofs have front-facing or side-facing gables — or often, both. The shape and structure of these pointed gables help support a house's roof and give the building a particular architectural style. Nathaniel Hawthorne famously wrote about a building with this architectural feature in The House of the Seven Gables. Gable, originally an Old French word meaning "facade or front," is from the Old Norse gafl, "gable-end," or "gable."