παρατρίβω
παρατρίβω
fut. ψω
to rub beside or alongside, π. χρυσὸν ἀκήρατον ἄλλῳ χρυσῷ (sc. εἰς βάσανον) to rub pure gold by the side of other gold on the lapis Lydius and see the difference of the marks they leave, Hdt.
παρατρίψασθαι τὸ μέτωπον, Lat. frontem perfricare, to harden the forehead by rubbing, i. e. to be hardened, dead to shame, Strab.