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 wall of wooden stakes, used as a defensive barrier.
An even row of cells. e.g.: palisade mesophyll cells.
A line of cliffs, especially one showing basaltic columns.
A long, strong stake, one end of which is set firmly in the ground, and the other sharpened.
To equip with a palisade.