wall (Noun) — An architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure. ex. "the south wall had a small window" ex. "the walls were covered with pictures"
wall (Noun) — Anything that suggests a wall in structure, function or effect. ex. "a wall of water" ex. "a wall of smoke" ex. "a wall of prejudice" ex. "negotiations ran into a brick wall"
wall (Noun) — (anatomy) a layer (a lining or membrane) that encloses a structure. ex. "stomach walls"
wall (Noun) — A difficult or awkward situation. ex. "his back was to the wall" ex. "competition was pushing them to the wall"
wall (Noun) — A vertical (or almost vertical) smooth rock face (as of a cave or mountain).
wall (Noun) — A layer of material that encloses space. ex. "the walls of the cylinder were perforated" ex. "the container's walls were blue"
wall (Noun) — A masonry fence (as around an estate or garden). ex. "the wall followed the road" ex. "he ducked behind the garden wall and waited"
wall (Noun) — An embankment built around a space for defensive purposes. ex. "they blew the trumpet and the walls came tumbling down"
wall (Verb) — Surround with a wall in order to fortify.