τὸν ἴδιον κίνδυνον ὑποθείς → at his own risk
P. and V. πύλη, ἡ.
mouth: P. and V. στόμα, τό, στόμιον, τό.
way out: P. and V. ἔξοδος, ἡ.
hole: Ar. and P. τρῆμα, τό.
