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| cof·fer·dam [ káwfər dàm, kóffər dàm ] (plural cof·fer·dams) |
noun |
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1. underwater construction area: a temporary watertight structure that is pumped dry to enclose an area underwater and allow construction work on a ship, bridge, or rig to be carried out
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2. buffer on ship: an empty space that acts as a protective barrier between two floors or bulkheads on a ship
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