Definitions of bulwark

1. To fortify with, or as with, a rampart or wall; to secure by fortification; to protect.

2. defend with a bulwark

3. To fortify with a bulwark.

4. To fortify with a rampart; to protect.

5. That which secures against an enemy, or defends from attack; any means of defense or protection.

6. A mound of earth raised around a place as a defense against cannon- shot; a fort- like structure; a rampart; the boarding round the sides of a ship, above the level of the deck; any means of protection or defense.

7. A fortification or rampart: any means of defence or security.

8. A rampart; fortification; defence.

9. A rampart; fortification; defense; raised side of a ship.

10. A rampart; a fortification; any means of defence or protection, originally made of the boles or trunks of trees; the railboards of a ship.