Cofferdam Definition

kôfər-dăm, kŏfər-
noun
A watertight temporary structure in a river, lake, etc., for keeping the water from an enclosed area that has been pumped dry so that a bridge foundation, dam, or pier may be constructed.
Webster's New World
A watertight box or chamber attached to the side of a ship so that repairs can be made below the waterline.
Webster's New World
An empty space serving as a protective barrier, as between two compartments of a ship.
Webster's New World
Synonyms:
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Other Word Forms of Cofferdam

Noun

Singular:
cofferdam
Plural:
cofferdams

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cofferdam