Dormer (noun)

A vertical window that projects from a sloping roof and is usually framed by a gable or hip roof.

Origin:

Mid 16th century: from french dormeur 'sleeper', from dormir 'to sleep'.

Examples:

1. The dormers added extra light and space to the attic bedrooms.
2. The dormers were decorated with carved wooden trim.
3. The design of the dormers helped to break up the monotony of the roofline.
4. The dormers provided ventilation for the attic space.
5. The view from the dormers was magnificent, with a panoramic view of the surrounding countryside.