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Definisi 'cofferdam'
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English to English noun
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large watertight chamber used for construction under water |  | source: wordnet30
| 2 |
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. | | source: webster1913
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