a panel in the roof of an automobile, usually above the driver's seat, that can be opened.

Section of a roof that opens when required to introduce sunlight or additional airflow.

an automobile roof having a sliding or raisable panel; "`sunshine-roof' is a British term for `sunroof'"

a cutout in a car's (or truck's) roof that can be opened to provide fresh air and sun to the people inside

a fairly significant part of any new vehicle program (imagine the consequences if it didn't seal properly), yet they often enter development long before the OEM is willing to release a prototype vehicle to Webasto

A window-type opening in the roof of the vehicle that can tilt or slide open.

A sunroof is an opening in an automobile roof. Sunroofs may be either fixed or operable.