cavern
From LSJ
ἐὰν ἐκπέσῃ τὸ σιδήριον καὶ αὐτὸς πρόσωπον ἐτάραξεν καὶ δυνάμεις δυναμώσει καὶ περισσεία τοῦ ἀνδρείου σοφία (Ecclesiastes 10:10, LXX version) → If the iron axe fails, and the man has furrowed his brow, he will gather his strength, and the redoubling of his manly vigor will be the wise thing.
cave: P. σπήλαιον, τό (Plato), Ar. and V. ἄντρον, τό, αὔλιον, τό, V. θαλάμαι, αἱ, P. and V. σῆραγξ, ἡ, σπέος, τό, σπεῖος (Epic), τό; see den, grotto.