2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Cofferdam \Cof"fer*dam\, 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
From WordNet r 1.6 [wn]:
cofferdam
n : large watertight chamber used for construction under water
[syn: {caisson}, {pneumatic caisson}]
more about cofferdam
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Lake Atitlan, Guatemala
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