BATTLESHIP

battleship, battlewagon

(noun) large and heavily armoured warship

Source: WordNet® 3.1

Etymology

Noun

battleship (plural battleships)

(military) Large capital warship displacing tens of thousands of tons, heavily armoured and armed with big guns. Battleships are now obsolescent, replaced by smaller vessels with guided missiles. Types: dreadnought, pre-dreadnought.

Non-functional rocket stage, used for configuration and integration tests.

A guessing game played on grid paper, see Battleship (game)

Source: Wiktionary