τὸ κοῖλον τοῦ ποδὸς δεῖξαι → show the heels, show a clean pair of heels, show the hollow of the foot, run away
andrŏsaemŏn: i, n., = ἀνδρόσαιμον> (man's blood),
I a kind of St. John's-wort, with blood-red juice: Hypericum perforatum, Linn.; Plin. 27, 4, 10, § 26 sq.