wall

noun

an embankment built around a space for defensive purposes

bulwark
an architectural partition with a height and length greater than its thickness
a masonry fence (as around an estate or garden)
“the wall followed the road”
a layer of material that encloses space
“the walls of the cylinder were perforated”
(anatomy) a layer (a lining or membrane) that encloses a structure
“stomach walls”
paries
anything that suggests a wall in structure or function or effect
“a wall of water”
a vertical (or almost vertical) smooth rock face (as of a cave or mountain)
a difficult or awkward situation
“My back was to the wall.”

verb