Caisson definition

Caisson





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2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Caisson \Cais"son\, n. [F., fr. caisse, case, chest. See 1st
     {Case}.]
     1. (Mil.)
        (a) A chest to hold ammunition.
        (b) A four-wheeled carriage for conveying ammunition,
            consisting of two parts, a body and a limber. In light


            field batteries there is one caisson to each piece,
            having two ammunition boxes on the body, and one on
            the limber. --Farrow.
        (c) A chest filled with explosive materials, to be laid in
            the way of an enemy and exploded on his approach.
            [1913 Webster]
  
     2.
        (a) A water-tight box, of timber or iron within which work
            is carried on in building foundations or structures
            below the water level.
        (b) A hollow floating box, usually of iron, which serves
            to close the entrances of docks and basins.
        (c) A structure, usually with an air chamber, placed
            beneath a vessel to lift or float it.
            [1913 Webster]
  
     3. (Arch.) A sunk panel of ceilings or soffits.
        [1913 Webster]
  
     {Pneumatic caisson} (Engin.), a caisson, closed at the top
        but open at the bottom, and resting upon the ground under
        water. The pressure of air forced into the caisson keeps
        the water out. Men and materials are admitted to the
        interior through an air lock. See {Lock}.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  caisson
       n 1: an ornamental sunken panel in a ceiling or dome [syn: {coffer},
             {lacuna}]
       2: a two-wheeled military vehicle carrying artillery ammunition
       3: a chest to hold ammunition [syn: {ammunition chest}]
       4: large watertight chamber used for construction under water
          [syn: {pneumatic caisson}, {cofferdam}]

















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