wall

noun

1
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
2
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
3
a masonry fence (as around an estate or garden)
the wall followed the road
he ducked behind the garden wall and waited
4
a layer of material that encloses space
the walls of the cylinder were perforated
the container's walls were blue
5
(anatomy) a layer (a lining or membrane) that encloses a structure
stomach walls
6
anything that suggests a wall in structure or function or effect
a wall of water
a wall of smoke
7
a vertical (or almost vertical) smooth rock face (as of a cave or mountain)
8
a difficult or awkward situation
his back was to the wall
competition was pushing them to the wall

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