μεταπύργιον
From LSJ
Φίλον δι' ὀργὴν ἐν κακοῖσι μὴ προδῷς → Amicum ob iram deserere cave in malis → Verrate einen Freund nicht in der Not aus Zorn
English (LSJ)
τό,
A = μεσοπύργιον, space between two towers, curtain, Th.3.22, Lys.Fr.97 S., IG22.463.49, 22.1658, al., Ph.Bel.80.11, J.BJ 3.5.2 (pl.).