1. All of a nation's warships.
2. often Navy A nation's entire military organization for sea warfare and defense, including vessels, personnel, and shore establishments.
3. A group of ships; a fleet.
4. Navy blue.

[Middle English, from Old French navie, from Latin nāvigia, pl. of nāvigium, ship, from nāvigāre, to sail. See navigate.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.