ὑῶν

From LSJ

ὅσον ἀπὸ τοῦ ἱεροῦ ἐφεωρᾶτο τῆς νήσου → as much of the island as was in view from the temple

Source

French (Bailly abrégé)

gén. pl. de ὗς.

Russian (Dvoretsky)

ὑῶν: gen. pl. к ὗς.