Synonyms for Wall (same or very similar meaning)
WordNet sense 1 ((anatomy) a layer (a lining or membrane) that encloses a structure):
pariesWordNet sense 2 (an embankment built around a space for defensive purposes):
bulwark, rampartWordNet sense 3 (surround with a wall in order to fortify):
fence, palisade, surround, fence inFrom the ODE community, based on WordNetadd/edit