admiral
noun[In the Latin of the middle ages. Amira, Amiras, Admiralis, an Emir; Heb. to speak. The terminating syllable of admiral may be from the sea. This word is said to have been introduced in Europe by the Turks, Genoese or Venetains, in the 12th or 13th century.]
A marine commander in chief; the commander of a fleet or navy.