Definition of: navy

(nā′vē) noun plural ·vies
1. The entire marine military force of a country, under the control of a government department, and including vessels, men in the service, yards, etc.
2. The entire shipping of a country engaged in trade and commerce; the merchant marine.
3. A fleet of ships, as of merchantmen.
—United States Navy The U.S. naval force administered by the Department of the Navy under the Department of Defense and including the Regular Navy, the Naval Reserve, the United States Marine Corps, and the United States Coast Guard when operating as a component of the Navy. [<OF navie <L navis ship]