n an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure
n anything that suggests a wall in structure or function or effect
n (anatomy) a layer (a lining or membrane) that encloses a structure
n a difficult or awkward situation
n a vertical (or almost vertical) smooth rock face (as of a cave or mountain)
n a layer of material that encloses space
n a masonry fence (as around an estate or garden)
n an embankment built around a space for defensive purposes
v surround with a wall in order to fortify
