Webster 1913 Edition
(U. S. Navy)
An officer who ranks next above a captain; sometimes, by courtesy, the senior captain of a squadron. The rank of commodore corresponds with that of brigadier general in the army.
A captain commanding a squadron, or a division of a fleet, or having the temporary rank of rear admiral.
A title given by courtesy to the senior captain of a line of merchant vessels, and also to the chief officer of a yachting or rowing club.
A familiar for the flagship, or for the principal vessel of a squadron or fleet.
Webster 1828 Edition
1.The officer who commands a squadron or detachment of ships, destined on a particular enterprise. In the British marine, he bears the rank of a brigadier-general in the army, and his ship is distinguished by a broad red pendant, tapering to the outer end, and sometimes forked.
2.A title given by courtesy to the senior captain, when three or more ships of war are cruising in company.
3.The convoy or leading ship in a fleet of merchantmen, which carries a light in her top to conduct the other ships.