ἀρχισύμμαχος

From LSJ

μηδ' εἰς ὀρχηστρίδος εἰσᾴττειν, ἵνα μὴ πρὸς ταῦτα κεχηνὼς μήλῳ βληθεὶς ὑπὸ πορνιδίου τῆς εὐκλείας ἀποθραυσθῇς → and not to dart into the house of a dancing-woman, lest, while gaping after these things, being struck with an apple by a wanton, you should be damaged in your reputation

Source

Spanish (DGE)

-ου, ὁ encargado de correos, jefe de mensajeros, PKlein Form.314.2 (V/VI d.C.), 271.3, PLaur.93.4 (ambos VI d.C.).