ἀμφίτριψ
From LSJ
εἰ γάρ κεν καὶ σμικρὸν ἐπὶ σμικρῷ καταθεῖο καὶ θαμὰ τοῦτ᾽ ἔρδοις, τάχα κεν μέγα καὶ τὸ γένοιτο → for if you add only a little to a little and do this often, soon that little will become great (Hesiod W&D, 361-362)
English (LSJ)
ιβος, ὁ, (τρίβω)
A rubbed all round: metaph., like περίτριμμα, practised knave, Archil.124, cf. Hsch.