ἡλόω
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
English (LSJ)
A sharpen, ἡλοῦσιν αὐτὸ (sc. τὸ κοντάριον) ξυλοπυρίας (sic) Anon. in Rh.236.18. II Pass., become callous, ἡλωμέναι ἐξοχαί Gal.17 (1).902.
German (Pape)
[Seite 1163] nageln, annageln, mit Nägeln beschlagen, Clem. Alex. paed. 2, 11.