A defensive wall or rampart.
A defense or safeguard.
A breakwater.
Any means of defence or security.
The planking or plating along the sides of a nautical vessel above her gunwale that reduces the likelihood of seas washing over the gunwales and people being washed overboard.
To fortify something with a wall or rampart.
To provide protection of defense for something.
A fortified defensive structure stationed with troops.
Any permanent army post.
An outlying trading-station, as in British North America.
A structure improvised from furniture, bedding, etc., for playing games.
To create a fort, fortifications, a strong point, or a redoubt.