caisson

play
noun cais·son \ ˈkā-ˌsän , -sᵊn , British also kə-ˈsün \

Definition of caisson

1 a :a chest to hold ammunition
b :a usually 2-wheeled vehicle for artillery ammunition attachable to a horse-drawn limber; also :a limber with its attached caisson
2 a :a watertight chamber used in construction work under water or as a foundation
b :a hollow floating box or a boat used as a floodgate for a dock or basin
3 :coffer 3

Recent Examples of caisson from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'caisson.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Illustration of caisson

Origin and Etymology of caisson

French, from Medieval French, from Old Occitan, from caissa chest, from Latin capsa — more at case



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