I.like ἴτυς, the edge or rim of anything round or curved:
1.the rim of the round shield, Il.
2.the rail round the front of the chariot, the chariot-rail, id=Il.; sometimes double, and therefore ἄντυγες in pl., id=Il., Soph.
II.post-Hom.,
1.in pl. the chariot itself, Soph., Eur.
2.the frame of the lyre, Eur.
3.the orbit of a planet, Hhymn.; the disk of the moon, Mosch.