Acroterion

An acroterion or acroterium is an architectural ornament placed on a flat pedestal, the acroter or plinth, and mounted at the apex or corner of the pediment of a building in the classical style. An acroterion placed at the outer angles of the pediment is an acroterion angularium.
The acroterion may take a wide variety of forms, such as a statue, tripod, disc, urn, palmette or some other sculpted feature. Acroteria are also found in Gothic architecture. They are sometimes incorporated into furniture designs.

Etymology

The word comes from the Greek , from the comparative form of the adjective ἄκρος, + -τερος + -ιον. It was Latinized by the Romans as acroterium. Akroteria or Acroteria is the plural of both the original Greek and the Latin form.
According to Webb, during the Hellenistic period the winged victory or Nike figure was considered to be "the most appropriate motif for figured akroteria.”