cofferdams
plural of cofferdam
Source: Wiktionary
Cof"fer*dam, n.
Definition: 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: Webster’s Unabridged Dictionary 1913 Edition
18 September 2024
(noun) a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust
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