Definition of cofferdam
1 : a watertight enclosure from which water is pumped to expose the bottom of a body of water and permit construction (as of a pier)
2 : a watertight structure for making repairs below the waterline of a ship
Recent Examples of cofferdam from the Web
Mr. Altschuler said a flotation could be built around the vessel and it could be extricated from the mud with a method known as a cofferdam and restored at the site.
This one took place on Feb. 18, 1986, when the cofferdam built in preparation for the construction of Auburn Dam collapsed above Folsom Lake.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cofferdam.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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