(pronounced kay-suhn) – A two-wheeled cart that carried two ammunition chests, tools, and a spare wheel for artillery pieces. The caisson could be attached to a limber, which would allow both to be pulled by a team of horses.  See image»

A 10- or 12-inch-diameter hole drilled into the earth and embedded into bedrock 3 to 4 feet. The structural support for a type of foundation wall, porch, patio, monopost, or other structure. Two or mo [..]

1704, from French caisson "ammunition wagon, box, crate," from Middle French caisson "large box" (16c.), from Italian cassone, augmentative form of cassa "a chest," from [..]

water-tight chamber that opens at the bottom and contains enough pressurized air to conduct underwater work.

A rolling ammunition container

A two-wheeled vehicle with large chests used for carrying artillery ammunition.

Ammunition wagon

(n) an ornamental sunken panel in a ceiling or dome(n) a two-wheeled military vehicle carrying artillery ammunition(n) a chest to hold ammunition(n) large watertight chamber used for construction unde [..]

A 10" or 12" diameter hole drilled into the earth and embedded into bedrock 3 - 4 feet. The structural support for a type of foundation wall, porch, patio, monopost, or other structure. Two or more "sticks" of reinforcing bars (rebar) are inserted into and run the full length of the hole and concrete is poured into the caisson h [..]

A shaft of concrete or steel which can be sunk through the ground by excavating the ground within the perimeter of the lower edge, with the rate of sinking frequently controlled by compressed air.

A structure used to close the entrance to dry docks, locks and non-tidal basins. They are of two kinds; floating caissons which are detachable from the entrance they close, and sliding caissons which [..]

(Fr. casson, "a chest, box") In architecture, a sunken panel in a ceiling or vault.

  Gate at the end of a drydock that keeps out the water.    

A structure or chamber that is usually sunk or lowered by digging from the inside. Used to gain access to the bottom of a stream or other body of water.

A watertight gate for a lock, basin, etc.

a watertight chamber used in construction work under water or as a foundation