What is the meaning of Battleship?

A large capital warship displacing thousands to tens of thousands of tons, heavily armoured and armed with large-caliber guns; now obsolescent and replaced by smaller vessels with guided missiles.

  1. A starship of comparable role

A starship of comparable role

A ship of the line.

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

A guessing game played on grid paper; see Battleship (game).

Source: wiktionary.org