dormer

This term describes a specific architectural feature designed to create usable headspace and introduce natural light into an attic or loft. It is a technical term used primarily in construction, real estate, and architecture to distinguish these projecting windows from standard flush-mounted skylights.

While the word is a standard countable noun, it is frequently used in compound forms like dormer window to specify the glazing element itself. The term carries a connotation of traditional residential charm, often associated with Cape Cod or Victorian style housing.