ὀφρῠό-εις · ophryo-eis — LSJ
on the brow or edge of a steep rock, beetling, Ἴλιος Il. 22.411; of the Acrocorinthus, Orac. ap. Hdt. 5.92.βʹ; μέτωπον Nonn. D. 15.106; cf. ὀφρυάω.
metaph., majestic, solemn, ὀφρυόεσσα ἀοιδή, of Aeschylus’ poetry, AP 7.39 (Antip. Thess.).