συμποσιαστής
From LSJ
ἐν πιθήκοις ὄντα δεῖ εἶναι πίθηκον → in Rome we do as the Romans do | when in Rome, do as the Romans do | when in Rome, do as the Romans | when in Rome, do like the Romans do | when in Rome | being among monkeys one has to be a monkey
German (Pape)
[Seite 989] ὁ, der mittrinkt u. mitschmauset, der Gast, Sp.