caisson.
A (permanent) enclosure from which water can be expelled, in order to give access to underwater areas for engineering works etc.
Meaning & usage
A (permanent) enclosure from which water can be expelled, in order to give access to underwater areas for engineering works etc.
A structure with similar function that is temporary.
A coffer (sunken panel).
The gate across the entrance to a drydock.
A floating tank that can be submerged, attached to an underwater object and then pumped out to lift the object by buoyancy.
A two-wheeled, horse-drawn military vehicle used to carry ammunition (and a coffin at funerals).
A large box to hold ammunition.
A chest filled with explosive materials, used like a mine.
Where this word comes from
Borrowed from French caisson. Doublet of cassone and cajón.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.