'Sunroof' definitions:

Definition of 'sunroof'

noun

An automobile roof having a sliding or raisable panel; "`sunshine-roof' is a British term for `sunroof'" [syn: sunroof, sunshine-roof]

From: GCIDE

Sunroof \Sun"roof`\, n. a panel in the roof of an automobile, usually above the driver's seat, that can be opened. [PJC] Sunset