ἡλόω
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
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.