πρυτανάρχης
From LSJ
Εὐφήμει, ὦ ἄνθρωπε· ἁσμενέστατα μέντοι αὐτὸ ἀπέφυγον, ὥσπερ λυττῶντά τινα καὶ ἄγριον δεσπότην ἀποδράς → Hush, man, most gladly have I escaped this thing you talk of, as if I had run away from a raging and savage beast of a master
English (LSJ)
ου, ὁ, A prytaniarch, prytanarch, president of a board of πρυτάνεις, Ath.Mitt.6.42 (Cyzicus).
Greek (Liddell-Scott)
πρυτανάρχης: ὁ, ὁ τῶν πρυτάνεων ἀρχηγός, Ἐπιγρ. Κυζίκου, Mitth. d, d. arch. Inst. VI, σ. 42.