WordNet (r) 3.0 (2006):
fanlight n 1: a window above a door that is usually hinged to a horizontal crosspiece over the door [syn: transom, transom window, fanlight] 2: a window in a roof to admit daylight [syn: skylight, fanlight] 3: a semicircular window over a door or window; usually has sash bars like the ribs of a fan