Lewis & Short

antĕfixus, a, um, Part., qs. from antefigo, fixed or fastened before, nailed to (rare): truncis arborum antefixa ora, Tac. A. 1, 61.
Hence, antĕfixa, ōrum, n.; subst., the little ornaments, images, statues, etc., affixed to the roofs and gutters of houses or temples, Paul. ex Fest. p. 8 Müll.: antefixa fictilia deorum Romanorum, Liv. 34, 4; 26, 23; cf. Müll. Etrusc. 2, 247; and id. Archaeol. § 284.