What is "navarch"

Navarch \Na"varch\ (n[=a]"v[aum]rk), n. [L. navarchus, Gr. nay`archo`s; nay^s ship + 'archo`s chief.] (Gr. Antiq.) The commander of a fleet.
--Mitford.

n. (context historical Ancient Greece English) The commander of a fleet.

Navarch (; pronounced návarchos) is a Greek word meaning "leader of the ships", which in some states became the title of an office equivalent to that of a modern admiral.