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Definition of Cofferdam
1. Noun. Large watertight chamber used for construction under water.
Definition of Cofferdam
1. n. A water- tight inclosure, as of piles packed with clay, from which the water is pumped to expose the bottom (of a river, etc.) and permit the laying of foundations, building of piers, etc.
Definition of Cofferdam
1. Noun. A temporary watertight structure that is pumped dry to enclose an area underwater and allow construction work on a ship, bridge, or rig to be carried out; a caisson. ¹
2. Noun. (nautical) An empty space that acts as a protective barrier between two floors or bulkheads on a ship. ¹
¹ Source: wiktionary.com
Definition of Cofferdam
1. [n -S]