| 单词 | caisson |
| 释义 | Word Frequency caisson(kəˈsuːn, ˈkeɪsən) noun 1. a watertight chamber open at the bottom and containing air under pressure, used to carry out construction work under water 2. a similar unpressurized chamber 3. a watertight float filled with air, used to raise sunken ships See also camel (sense 2)4. a watertight structure placed across the entrance of a basin, dry dock, etc, to exclude water from it 5. a. a box containing explosives, formerly used as a mine b. an ammunition chest c. a two-wheeled vehicle containing an ammunition chest 6. another name for coffer (sense 3) Word origin C18: from French, assimilated to caisse case2 |
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