noun
gable
GAY-bul/ˈɡeɪbl/
The triangular upper part of a wall beneath a pitched roof.
A round window sits in the gable above the front door.

Etymology
Old Norse gafl named the gable-end of a building. The selected English sense focuses on the wall rising from the eaves to the roof’s apex, which gives it its triangular shape.
In context
Then next to it with the window on the first floor and the gable end facing us was the solar block.
More examples
- The brick gable rises to a point beneath the roof.
- Both gables have vents that let air into the attic.
- We painted the wooden gable white to match the trim.
Forms
gable · gables
gabled adjective — Having one or more triangular wall sections.
Similar words
- gable end
- Can mean the entire end wall, not just its triangle.
- pediment
- Usually a decorative triangular feature above an entrance or window.