ἄκρος (root ακ), sup. ἀκρότατος: uttermost, topmost, highest, at the
top, end, edge, or surface of (summus);
πόλις ἄκρη, ἄκρη πόλις,
‘upper city’ (=ἀκρόπολις); κατ᾽ ἄκρης, see
ἄκρη.—Adv. ἄκρον, ‘along the top,’
Il. 20.229.