wall

Dictionary definition · 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"
anything that suggests a wall in structure or function or effect"a wall of water"
(anatomy) a layer (a lining or membrane) that encloses a structure"stomach walls"
a difficult or awkward situation"his back was to the wall"
a vertical (or almost vertical) smooth rock face (as of a cave or mountain)
a layer of material that encloses space"the walls of the cylinder were perforated"
a masonry fence (as around an estate or garden)"the wall followed the road"
an embankment built around a space for defensive purposes"they stormed the ramparts of the city"

Source: Open English WordNet (CC BY 4.0).