commander of a fleet, admiral, A. Pers. 363, Hdt. 7.59, 8.42, Eub. 67.11, IG 12(3).103.12 (pl., Nisyros); οὔτε στρατηγοὺς οὔτε ν. S. Aj. 1232; esp. the Spartan admiral-in-chief, Th. 4.11, 8.6, 20, 23, X. An. 1.4.2, etc.; used of an inferior naval officer, Decr. ap. D. 18.73; nauarchorum coetus circiter provincias Orientis, Cod.Just. 11.2.4.
as Adj., ἐπὶ ναυάρχῳ σώματι . . τῷ βασιλείῳ A. Ch. 723 (anap.).