walls

wall

• n.
  • 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"

  • an embankment built around a space for defensive purposes

    "they blew the trumpet and the walls came tumbling down"

    同义词：rampartbulwark

  • 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"

  • a masonry fence (as around an estate or garden)

    "the wall followed the road"; "he ducked behind the garden wall and waited"

  • (anatomy) a layer (a lining or membrane) that encloses a structure

    "stomach walls"

    同义词：paries

  • 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"; "the container's walls were blue"

  • a difficult or awkward situation

    "his back was to the wall"; "competition was pushing them to the wall"

• v.surround with a wall in order to fortify

  同义词：palisadefencefence insurround