ἀκροπόρος
From LSJ
ἐὰν ἐκπέσῃ τὸ σιδήριον καὶ αὐτὸς πρόσωπον ἐτάραξεν καὶ δυνάμεις δυναμώσει καὶ περισσεία τοῦ ἀνδρείου σοφία (Ecclesiastes 10:10, LXX version) → If the iron axe fails, and the man has furrowed his brow, he will gather his strength, and the redoubling of his manly vigor will be the wise thing.
English (LSJ)
ον,
A boring through, piercing with the point, ὀβελοί Od.3.463. 2 proparox., ἀκρόπορος, ον, Pass., with opening at end, σῦριγξ Nonn.D.2.2. II (πορεύομαι) going on high, ib.46.136.
German (Pape)
[Seite 84] mit der Spitze durchbohrend, Hom. einmal, Od. 3, 463 ἀκροπόρους όβελούς; – Nonn. D. 2, 2 σῦριγξ ἀκρόπορος, die oben durchbohrte; ἴχνεα ακρ. 46, 136, hochwandelnde.