fanlight

nouns

a window above a door that is usually hinged to a horizontal crosspiece over the door

fanlight, transom, transom window

a window in a roof to admit daylight

fanlight, skylight

a semicircular window over a door or window; usually has sash bars like the ribs of a fan

fanlight

is a type of (narrower)

a framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air