ἡρῷον · hērōion — LSJ
(sc. ἱερόν or ἕδος) shrine of a hero, Hdt. 5.47, 67, Th. 2.17, etc.; θἠρῷον, i.e. τὸ ἡρῷον, Ar. V. 819.
tomb, IG 12(7).478 (Amorgos), IGRom. 4.799 (Apamea, iii A.D.), etc.:—in form ἡρώειον, CIG 4418 (Cilicia), etc.
(sc. μέτρον) hexameter, Plu. Num. 4, etc.
ἡρῷα (sc. ἱερά), τά, festival of a hero, δειπνεῖν Id. Praec. 2.811d, cf. IG 2(2).974.