Substantiv

1. 1. bastion
2. 2. bastion
3. 3. [mar] parapet

Explicatie DEX:

• BULWARK, a wall of earth or other material built for defense; rampart.
• BULWARK, any protection against external danger, injury, or annoyance: The new dam was a bulwark against future floods.
• BULWARK, any person or thing giving strong support or encouragement in time of need, danger, or doubt: Religion was his bulwark.
• BULWARK, Usually, bulwarks. Nautical. a solid wall enclosing the perimeter of a weather or main deck for the protection of persons or objects on deck.
• BULWARK, to fortify or protect with a bulwark; secure by or as if by a fortification.