ALL meanings of ship of the line
ship of the line
S s - noun ship of the line a former sailing warship armed powerfully enough to serve in the line of battle, usually having cannons ranged along two or more decks; battleship. 1
- noun ship of the line (formerly) a warship large enough to fight in the first line of battle 0
- noun ship of the line a warship of the largest class, having a position in the line of battle 0