τὸ κοῖλον τοῦ ποδὸς δεῖξαι → show the heels, show a clean pair of heels, show the hollow of the foot, run away
See razor.
rāsŏr, ōris, m., = fidicen : P. Fest. 275, 2.
rāsor, ōris, m. (rado), der Saitenreißer = Saitenspieler, Paul. ex Fest. 275, 2.
