μελεδωνός
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
English (LSJ)
ὁ and ἡ,
A attendant, guardian, τῶν οἰκίων μ. house-steward, Hdt.3.61; ὁ μ. τῶν θηρίων the keeper of the crocodiles, Id.2.65; μ. τῆς τροφῆς one who provides their food, ibid., cf. 7.31; μ. τῶν χρημάτων ib.38; μελεδωνοὶ τῶν ἱερῶν D.H.1.67; τοῦ τείχους Ael.NA 3.26; μ. λῃστῶν agents of pirates, Philostr.VA3.24; title of public officials in Samos, SIG976.63 (ii B.C.): metaph., of a learned man, πάσης πολύβυβλον ἀφ' ἱστορίης μ. Ath.Mitt.11.428 (Notium).