καθάπερ ὄφις παλαιὸν ἀποδύεται θώρακα → just as a snake sheds its old skin
P. σπήλαιον, τό (Plato), Ar. and V. ἄντρον, τό, αὔλιον, τό, V. θαλάμαι, αἱ, P. and V. σῆραγξ, ἡ (Soph., Fragment; Plato, Phaedo, 110A); see den.