δειπνητήριον
From LSJ
Ὁ δὲ μὴ δυνάμενος κοινωνεῖν ἢ μηδὲν δεόμενος δι' αὐτάρκειαν οὐθὲν μέρος πόλεως, ὥστε ἢ θηρίον ἢ θεός → Whoever is incapable of associating, or has no need to because of self-sufficiency, is no part of a state; so he is either a beast or a god
English (LSJ)
τό,
A dining-room, Plu.Luc.41, Inscr. ap.PFay.p.33, J.BJ2.8.5.
German (Pape)
[Seite 540] τό, Speisesaal, Plut. Lucull. 41 u. a. Sp.