1. (noun)wall an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure "the south wall had a small window"; "the walls were covered with pictures"
2. (noun)wall anything that suggests a wall in structure or function or effect "a wall of water"; "a wall of smoke"; "a wall of prejudice"; "negotiations ran into a brick wall"
3. (noun)wall, paries (anatomy) a layer (a lining or membrane) that encloses a structure "stomach walls"
4. (noun)wall a difficult or awkward situation "his back was to the wall"; "competition was pushing them to the wall"
6. (noun)wall a layer of material that encloses space "the walls of the cylinder were perforated"; "the container's walls were blue"
7. (noun)wall a masonryfence (as around an estate or garden)
"the wall followed the road"; "he ducked behind the garden wall and waited"
8. (noun)rampart, bulwark, wall an embankment built around a space for defensive purposes
"they stormed the ramparts of the city"; "they blew the trumpet and the walls came tumbling down"
9. (verb)wall, palisade, fence, fence in, surround surround with a wall in order to fortify