Meaning of the word caisson in English

What does caisson mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

caisson

US /ˈkeɪ.sən/
UK /ˈkeɪ.sən/
"caisson" picture

Noun

1.

a large watertight chamber, open at the bottom, from which the water is kept out by air pressure and in which construction work may be carried out under water.

Example:
Divers worked inside the caisson to build the bridge's foundation.
The construction crew lowered the caisson into the riverbed.
2.

an ammunition wagon or chest.

Example:
The artillery unit moved the caisson loaded with shells.
The funeral procession included a horse-drawn caisson carrying the flag-draped coffin.