δήμαρχ-ος · dēmarch-os — LSJ
chief official of a δῆμος, Ar. Nu. 37, Lys. Fr. 184S., D. 50.6, Lex ap.eund. 43.58, Arist. Ath. 21.5; also at Cos, Inscr.Cos 344, al.; at Chios, Schwyzer 687C 1.
at Naples, one of the chief magistrates of the city, Str. 5.4.7; at Eretria, IG 12(9).189.24 (iv B. C.).
at Rome, = Lat. tribunus plebis, Plb. 6.12.2, D.H. 6.89, Plu. Cor. 7, etc.