- 1 a long vertical solid structure, made of stone, brick or concrete, that surrounds, divides or protects an area of land The fields were divided by stone walls. He sat on the wall and watched the others playing. see also sea wall
- 2 any of the vertical sides of a building or room I'm going to paint the walls white and the ceiling pink. Hang the picture on the wall opposite the window. She leaned against the wall. CollocationsDecorating and home improvementHouses refurbish/renovate/ (British English) do up a building/a house convert a building/house/room into homes/offices/(especially North American English) apartments/(British English) flats extend/enlarge a house/building/room/kitchen build (British English) an extension (to the back/rear of a house)/(North American English) an addition (on/to something)/(British English) a conservatory knock down/demolish a house/home/building/wall knock out/through the wall separating two roomsDecoration furnish/paint/ (especially British English) decorate a home/house/apartment/flat/room be decorated in bright colours/(especially US English) colors/in a traditional style/with flowers/with paintings paint/plaster the walls/ceiling hang/put up/strip off/remove the wallpaper install/replace/remove the bathroom fixtures/(British English) fittings build/put up shelves lay wooden flooring/timber decking/floor tiles/a carpet/a patio put up/hang/take down a picture/painting/poster/curtainDIY/home improvement do (British English) DIY/carpentry/the plumbing/the wiring make home improvements add/install central heating/underfloor heating/insulation fit/install double-glazing/a smoke alarm insulate your house/your home/the walls/the pipes/the tanks/(especially British English) the loft fix/repair a roof/a leak/a pipe/the plumbing/a leaking (especially British English) tap/(usually North American English) faucet block/clog (up)/unblock/unclog a pipe/sink make/drill/fill a hole hammer (in)/pull out/remove a nail tighten/untighten/loosen/remove a screw saw/cut/treat/stain/varnish/paint wood
- 3something that forms a barrier or stops you from making progress The boat struck a solid wall of water. The investigators were confronted by a wall of silence.
- 4the outer layer of something hollow such as an organ of the body or a cell of an animal or a plant the abdominal wall the wall of an artery See related entries: Cell biology Word Origin Old English, from Latin vallum
(saying) used when you are describing a situation in which there are signs that something is going to have problems or that it is going to be a failure It is amazing that not one of them saw the writing on the wall. From the Bible story in which strange writing appeared on a wall during a feast given by King Belshazzar, predicting Belshazzar’s death and the fall of his city.