n. [ OE. amiral, admiral, OF. amiral, ultimately fr. Ar. amīr-al-bahr commander of the sea; Ar. amīr is commander, al is the Ar. article, and amīr-al, heard in different titles, was taken as one word. Early forms of the word show confusion with L. admirabilis admirable, fr. admirari to admire. It is said to have been introduced into Europe by the Genoese or Venetians, in the 12th or 13th century. Cf. Ameer, Emir. ] 1. A naval officer of the highest rank; a naval officer of high rank, of which there are different grades. The chief gradations in rank are admiral, vice admiral, and rear admiral. The admiral is the commander in chief of a fleet or of fleets. [ 1913 Webster ]

2. The ship which carries the admiral; also, the most considerable ship of a fleet. [ 1913 Webster ]

Like some mighty admiral, dark and terrible, bearing down upon his antagonist with all his canvas straining to the wind, and all his thunders roaring from his broadsides. E. Everett. [ 1913 Webster ]

3. (Zool.) A handsome butterfly (Pyrameis Atalanta) of Europe and America. The larva feeds on nettles. [ 1913 Webster ]

Admiral shell (Zool.), the popular name of an ornamental cone shell (Conus admiralis). [ 1913 Webster ]

Lord High Admiral, a great officer of state, who (when this rare dignity is conferred) is at the head of the naval administration of Great Britain. [ 1913 Webster ]

n. The office or position oaf an admiral; also, the naval skill of an admiral. [ 1913 Webster ]

n.; pl. Admiralties [ F. amirauté, for an older amiralté, office of admiral, fr. LL. admiralitas. See Admiral. ] 1. The office or jurisdiction of an admiral. Prescott. [ 1913 Webster ]

2. The department or officers having authority over naval affairs generally. [ 1913 Webster ]

3. The court which has jurisdiction of maritime questions and offenses. [ 1913 Webster ]

☞ In England, admiralty jurisdiction was formerly vested in the High Court of Admiralty, which was held before the Lord High Admiral, or his deputy, styled the Judge of the Admiralty; but admiralty jurisdiction is now vested in the probate, divorce, and admiralty division of the High Justice. In America, there are no admiralty courts distinct from others, but admiralty jurisdiction is vested in the district courts of the United States, subject to revision by the circuit courts and the Supreme Court of the United States. Admiralty jurisprudence has cognizance of maritime contracts and torts, collisions at sea, cases of prize in war, etc., and in America, admiralty jurisdiction is extended to such matters, arising out of the navigation of any of the public waters, as the Great Lakes and rivers. [ 1913 Webster ]

4. The system of jurisprudence of admiralty courts. [ 1913 Webster ]

5. The building in which the lords of the admiralty, in England, transact business. [ 1913 Webster ]