The Collaborative International Dictionary of English v.0.48:

Wall \Wall\, n. [AS. weall, from L. vallum a wall, vallus a
   stake, pale, palisade; akin to Gr. ? a nail. Cf. Interval.]
   [1913 Webster]
   1. A work or structure of stone, brick, or other materials,
      raised to some height, and intended for defense or
      security, solid and permanent inclosing fence, as around a
      field, a park, a town, etc., also, one of the upright
      inclosing parts of a building or a room.
      [1913 Webster]

            The plaster of the wall of the King's palace. --Dan.
                                                  v. 5.
      [1913 Webster]

   2. A defense; a rampart; a means of protection; in the
      plural, fortifications, in general; works for defense.
      [1913 Webster]

            The waters were a wall unto them on their right
            hand, and on their left.              --Ex. xiv. 22.
      [1913 Webster]

            In such a night,
            Troilus, methinks, mounted the Troyan walls. --Shak.
      [1913 Webster]

            To rush undaunted to defend the walls. --Dryden.
      [1913 Webster]

   3. An inclosing part of a receptacle or vessel; as, the walls
      of a steam-engine cylinder.
      [1913 Webster]

   4. (Mining)
      (a) The side of a level or drift.
      (b) The country rock bounding a vein laterally. --Raymond.
          [1913 Webster]

   Note: Wall is often used adjectively, and also in the
         formation of compounds, usually of obvious
         signification; as in wall paper, or wall-paper; wall
         fruit, or wall-fruit; wallflower, etc.
         [1913 Webster]

   Blank wall, Blind wall, etc. See under Blank, Blind,
      etc.

   To drive to the wall, to bring to extremities; to push to
      extremes; to get the advantage of, or mastery over.

   To go to the wall, to be hard pressed or driven; to be the
      weaker party; to be pushed to extremes.

   To take the wall. to take the inner side of a walk, that
      is, the side next the wall; hence, to take the precedence.
      "I will take the wall of any man or maid of Montague's."
      --Shak.

   Wall barley (Bot.), a kind of grass (Hordeum murinum)
      much resembling barley; squirrel grass. See under
      Squirrel.

   Wall box. (Mach.) See Wall frame, below.

   Wall creeper (Zool.), a small bright-colored bird
      (Tichodroma muraria) native of Asia and Southern Europe.
      It climbs about over old walls and cliffs in search of
      insects and spiders. Its body is ash-gray above, the wing
      coverts are carmine-red, the primary quills are mostly red
      at the base and black distally, some of them with white
      spots, and the tail is blackish. Called also spider
      catcher.

   Wall cress (Bot.), a name given to several low cruciferous
      herbs, especially to the mouse-ear cress. See under
      Mouse-ear.

   Wall frame (Mach.), a frame set in a wall to receive a
      pillow block or bearing for a shaft passing through the
      wall; -- called also wall box.

   Wall fruit, fruit borne by trees trained against a wall.

   Wall gecko (Zool.), any one of several species of Old World
      geckos which live in or about buildings and run over the
      vertical surfaces of walls, to which they cling by means
      of suckers on the feet.

   Wall lizard (Zool.), a common European lizard (Lacerta
      muralis) which frequents houses, and lives in the chinks
      and crevices of walls; -- called also wall newt.

   Wall louse, a wood louse.

   Wall moss (Bot.), any species of moss growing on walls.

   Wall newt (Zool.), the wall lizard. --Shak.

   Wall paper, paper for covering the walls of rooms; paper
      hangings.

   Wall pellitory (Bot.), a European plant (Parictaria
      officinalis) growing on old walls, and formerly esteemed
      medicinal.

   Wall pennywort (Bot.), a plant (Cotyledon Umbilicus)
      having rounded fleshy leaves. It is found on walls in
      Western Europe.

   Wall pepper (Bot.), a low mosslike plant (Sedum acre)
      with small fleshy leaves having a pungent taste and
      bearing yellow flowers. It is common on walls and rocks in
      Europe, and is sometimes seen in America.

   Wall pie (Bot.), a kind of fern; wall rue.

   Wall piece, a gun planted on a wall. --H. L. Scott.

   Wall plate (Arch.), a piece of timber placed horizontally
      upon a wall, and supporting posts, joists, and the like.
      See Illust. of Roof.

   Wall rock, granular limestone used in building walls. [U.
      S.] --Bartlett.

   Wall rue (Bot.), a species of small fern (Asplenium
      Ruta-muraria) growing on walls, rocks, and the like.

   Wall spring, a spring of water issuing from stratified
      rocks.

   Wall tent, a tent with upright cloth sides corresponding to
      the walls of a house.

   Wall wasp (Zool.), a common European solitary wasp
      (Odynerus parietus) which makes its nest in the crevices
      of walls.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Wall \Wall\, n. (Naut.)
   A kind of knot often used at the end of a rope; a wall knot;
   a wale.
   [1913 Webster]

   Wall knot, a knot made by unlaying the strands of a rope,
      and making a bight with the first strand, then passing the
      second over the end of the first, and the third over the
      end of the second and through the bight of the first; a
      wale knot. Wall knots may be single or double, crowned or
      double-crowned.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Wall \Wall\, v. t. [imp. & p. p. Walled; p. pr. & vb. n.
   Walling.]
   1. To inclose with a wall, or as with a wall. "Seven walled
      towns of strength." --Shak.
      [1913 Webster]

            The king of Thebes, Amphion,
            That with his singing walled that city. --Chaucer.
      [1913 Webster]

   2. To defend by walls, or as if by walls; to fortify.
      [1913 Webster]

            The terror of his name that walls us in. --Denham.
      [1913 Webster]

   3. To close or fill with a wall, as a doorway.
      [1913 Webster]

WordNet (r) 3.0 (2006):

wall
    n 1: 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"
    2: 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"
    3: (anatomy) a layer (a lining or membrane) that encloses a
       structure; "stomach walls" [syn: wall, paries]
    4: a difficult or awkward situation; "his back was to the wall";
       "competition was pushing them to the wall"
    5: a vertical (or almost vertical) smooth rock face (as of a
       cave or mountain)
    6: a layer of material that encloses space; "the walls of the
       cylinder were perforated"; "the container's walls were blue"
    7: a masonry fence (as around an estate or garden); "the wall
       followed the road"; "he ducked behind the garden wall and
       waited"
    8: 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" [syn: rampart,
       bulwark, wall]
    v 1: surround with a wall in order to fortify [syn: wall,
         palisade, fence, fence in, surround]

Moby Thesaurus II by Grady Ward, 1.0:

136 Moby Thesaurus words for "wall":
   arch dam, arm, armor, armor-plate, backstop, balustrade,
   bamboo curtain, bank, bar, barbed wire, barrage, barricade,
   barrier, battle, bear-trap dam, beaver dam, block, blockade, bluff,
   boom, boundary, brattice, breakwater, breastwork, brick wall,
   buffer, buffer state, bulkhead, bulkhead in, bulwark, bumper, cage,
   castellate, cliff, cloison, close in, cofferdam, collision mat,
   contravallation, coop, corral, crag, crenellate, cushion, dam,
   defense, diaphragm, dig in, dike, dissepiment, ditch, divide,
   dividing line, dividing wall, division, earthwork, embankment,
   embattle, entrench, envelop, escarpment, face, fence, fence off,
   fences, fender, fortify, garrison, gate, gravity dam, groin, hedge,
   hedgerow, hem, hoarding, hydraulic-fill dam, immure, interseptum,
   iron curtain, jam, jetty, leaping weir, levee, logjam, man,
   man the garrison, mat, midriff, midsection, milldam, mine, moat,
   mole, mound, pad, pale, paling, palisade, palisades, panel,
   parapet, paries, partition, party wall, picket, portcullis,
   precipice, property line, rail, railing, rampart, retaining wall,
   roadblock, rock-fill dam, scar, scarp, seawall, separate,
   separation, septulum, septum, set apart, shock pad, shutter dam,
   steep, stockade, stone wall, stop, trellis, vallation, vallum,
   wall off, weir, wicket dam, work, zigzag fence



The Jargon File (version 4.4.7, 29 Dec 2003):

wall
 interj.

    [WPI]

    1. An indication of confusion, usually spoken with a quizzical tone: ?
    Wall???

    2. A request for further explication. Compare octal forty.

    3. [Unix, from ?write all?] v. To send a message to everyone currently
    logged in, esp. with the wall(8) utility.

    It is said that sense 1 came from the idiom ?like talking to a blank wall?.
    It was originally used in situations where, after you had carefully
    answered a question, the questioner stared at you blankly, clearly having
    understood nothing that was explained. You would then throw out a ?Hello,
    wall?? to elicit some sort of response from the questioner. Later, confused
    questioners began voicing ?Wall?? themselves.


The Free On-line Dictionary of Computing (30 December 2018):

wall

    Unix's "write all" command which sends a
   message to everyone currently logged in.

   [Jargon File]

   (2009-05-14)


Easton's 1897 Bible Dictionary:

Wall
   Cities were surrounded by walls, as distinguished from "unwalled
   villages" (Ezek. 38:11; Lev. 25:29-34). They were made thick and
   strong (Num. 13:28; Deut. 3:5). Among the Jews walls were built
   of stone, some of those in the temple being of great size (1
   Kings 6:7; 7:9-12; 20:30; Mark 13:1, 2). The term is used
   metaphorically of security and safety (Isa. 26:1; 60:18; Rev.
   21:12-20). (See FENCE.)


Bouvier's Law Dictionary, Revised 6th Ed (1856):

WALL. A building or erection so well known as to need no definition. In
general a man may build a wall on any part of his estate, to any height he
may deem proper, and in such form as may best accommodate him; but he must
take care not to erect a wall contrary to the local regulations, nor in such
a manner as to be injurious to his neighbors. See Dig. 50, 16, 157. Vide
Party Wall.



U.S. Gazetteer Places (2000):

Wall, PA -- U.S. borough in Pennsylvania
   Population (2000):    727
   Housing Units (2000): 363
   Land area (2000):     0.443021 sq. miles (1.147420 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.443021 sq. miles (1.147420 sq. km)
   FIPS code:            80600
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.393468 N, 79.787692 W
   ZIP Codes (1990):     15148
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Wall, PA
    Wall


U.S. Gazetteer Places (2000):

Wall, SD -- U.S. town in South Dakota
   Population (2000):    818
   Housing Units (2000): 438
   Land area (2000):     2.023618 sq. miles (5.241146 sq. km)
   Water area (2000):    0.040694 sq. miles (0.105398 sq. km)
   Total area (2000):    2.064312 sq. miles (5.346544 sq. km)
   FIPS code:            68380
   Located within:       South Dakota (SD), FIPS 46
   Location:             43.991559 N, 102.240956 W
   ZIP Codes (1990):     57790
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Wall, SD
    Wall