οὐκ ἔστι σιγᾶν αἰσχρόν, ἀλλ' εἰκῆ λαλεῖν → keeping silence is not shameful; speaking at random is (Menander)
P. and V. στόμα, τό.
outlet: P. and V. ἔξοδος, ἡ, διέξοδος, ἡ.
chasm: P. and V. χάσμα, τό.
perforation: Ar. and P. τρῆμα, τό.
