πρέσβος
From LSJ
εἰ δὲ τύχῃ τις ἔρδων, μελίφρον' αἰτίαν ῥοαῖσι Μοισᾶν ἐνέβαλε → if someone is successful in his deeds, he casts a cause for sweet thoughts into the streams of the Muses
English (LSJ)
εος, τό, poet. word,
A object of reverence, Πέρσαις to them, A. Pers.623 (anap.); π. Ἀργείων august assembly of... Id.Ag.855,1393.
German (Pape)
[Seite 698] τό, poet. = πρέσβευμα, Gegenstand der Verehrung; βασίλεια γύναι, πρέσβος Πέρσαις, Aesch. Pers. 615; auch πρέσβος Ἀργείων τόδε, die Ehrenversammlung, Ag. 829.