ἡ κέρκος τῇ ἀλώπεκι μαρτυρεῖ → you can tell a fox by its tail, small traits give the clue to the character of a person
subs.
P. σπηλαῖον, τό (Plat.), Ar. and V. ἄντρον, τό, αὔλιον, τό, V. θαλάμαι, αἱ, P. and V. σῆραγξ, ἡ (Plat., Phaedo. 110A and Soph., Frag.).
γλάφυ, γύαλον, κατῶρυξ, πέτρα, σπέος, σπήλαιον, σπῆλυγξ