Webster's Revised Unabridged Dictionary · 1913

Antefix

Antefix ({not transcribed}) , noun

[Latin ante + fixus fixed.]

(a)
(Architecture) An ornament fixed upon a frieze.
(b)
(Architecture) An ornament at the eaves, concealing the ends of the joint tiles of the roof.
(c)
(Architecture) An ornament of the cymatium of a classic cornice, sometimes pierced for the escape of water.