τὸ κοῖλον τοῦ ποδὸς δεῖξαι → show the heels, show a clean pair of heels, show the hollow of the foot, run away
(see also: παραρρήγνυμι) break
perfringere, to break through, 4.96.6.PASS. 5.73.1, 6.70.2.
