n. An emir or prince under the sultan; any Saracen ruler or commander.n. A naval officer of the highest rank; a commander-in-chief of a fleet.n. The recognized chief commander or director of a mercantile fleet, as one of fishing-vessels off Newfoundland or in the North Sea.n. The ship which carries the admiral; hence, the most considerable ship of any fleet, as of merchantmen or of fishing-vessels.n. A collectors' name for butterflies of the family Papilionidæ, especially the Limenitis camilla, distinguished as white admiral, and the Vanessa atalanta, or red admiral.n. A name given by collectors of shells to a univalve shell, the admiral-shell (which see).Carrying an admiral; chief in a fleet.