δεσμοφυλάκιον

From LSJ

γνοίης ὅσσον ὄνων κρέσσονες ἡμίονοι → you know how much better are donkeys from mules

Source

Spanish (DGE)

-ου, τό
prisión, cárcel, PTeb.904.14 (II a.C.), PFlor.2.100 (III d.C.).