A battleship, the USS New Jersey.
battleship definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a class of large warships with the biggest guns and very heavy armor
battleship definition by American Heritage Dictionary
Any one of a class of warships of the largest size, carrying the greatest number of weapons and clad with the heaviest armor. Also called battlewagon.
Origin: Short for line-of-battle ship.