An old artillery caisson on display at a national park.
caisson definition by Webster's New World
- a chest for holding ammunition
- a two-wheeled wagon for transporting ammunition
- a watertight enclosure inside which underwater construction work can be done
- a watertight box for raising sunken ships: after the box is sunk and attached, the water is forced out of it so that it floats
- a hollow, boat-shaped box, used as a floodgate at a dock or basin
Origin: French ; from Italian cassone ; from cassa, a chest ; from Classical Latin capsa, a box, case
caisson definition by American Heritage Dictionary
- A watertight structure within which construction work is carried on under water.
- See camel.
- A large box open at the top and one side, designed to fit against the side of a ship and used to repair damaged hulls under water.
- A floating structure used to close off the entrance to a dock or canal lock.
- a. A horse-drawn vehicle, usually two-wheeled, used to carry artillery ammunition and coffins at military funerals.b. A large box used to hold ammunition.
Origin: French, from Old French, large box, alteration (influenced by caisse, chest) of casson, from Italian cassone, augmentative of cassa, box, from Latin capsa.