A wall.
A pattern-forming ridge on the surface of a pollen grain.
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.