A fixed or operable opening in a vehicle roof (car or truck) which allows fresh air and/or light to enter the passenger compartment. A sunroof may include a transparent or opaque panel and may be manually operated or power driven.
Light from above; toplighting.
Any glazing above a main window, partition or door
A skylight.
The upper (and usually smaller) part (casement) of a window, often hinged a the top