fanlight

1. (architecture) A semicircular or semioval window over a door or other window, normally having a fan-like structure of ribs; sometimes hinged to the transom.Examples: "One house, however, second from the corner, was still occupied entire; and at the door of this, which wore a great air of wealth and comfort, though it was now plunged in darkness except for the fanlight, Mr. Utterson stopped and knocked. A well-dressed, elderly servant opened the door."; "Flutings also adorn the short architraves each side of the fanlight, and the abacus of the pilaster columns which is carried across a supplementary lintel in front of the lintel proper, the latter being several inches to the rear because of the deeply recessed arrangement of the door."; "This street is Summer. Faces of brick run together to make a single block-long face. The house numbers are set in fanlights of stained glass above the doors."