FANLIGHT
fanlight
(noun) a semicircular window over a door or window; usually has sash bars like the ribs of a fan
skylight, fanlight
(noun) a window in a roof to admit daylight
transom, transom window, fanlight
(noun) a window above a door that is usually hinged to a horizontal crosspiece over the door
Source: WordNet® 3.1
Etymology
Noun
fanlight (plural fanlights)
a semicircular or semioval window over a door or other window, normally having a fan-like structure of ribs; sometimes hinged to the transom
Hypernyms
• light
Source: Wiktionary