A defense or safeguard.
A defensive wall or rampart.
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 safeguard.
A chemical element (symbol Pd) with an atomic number of 46: a rare, lustrous silvery-white metal.
A single atom of this element.