ὑποτρίβω · hypotribō — LSJ
rub a little, gently
rub a little or gently, Hp. Genit. 1.
2 rub down
rub down for mixing in a dish, σήσαμʼ ὑ. εἰς ταύτην (sc. ἅλμην) Damox. 2.38, cf. Cratin. 27; v. ὑπότριμμα.
II rub off beneath, gradually, wear their, off
rub off beneath or gradually:— Pass., ὑποτρίβεσθαι τὰς ὁπλάς, of horses, wear their hoofs off, D.S. 17.94: so intr. in Act., ὑποτρίβουσι τοῖς ποσί Hippiatr. 53: cf. foreg.
III to be aggravated, become chronic
in Pass., to be aggravated or become chronic, of diseases, Aët. 9.35.