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a. A covering used to provide thermal insulation, as from a steam pipe.
b. A similar covering used to provide acoustical insulation, as on an air duct.
a. A plank or set of planks forming the outer surface of a centering for the construction of an arch.
b. Any of various structural members or materials used as a protective sheathing, as on the ceiling of a mine tunnel or around a boiler.
1. insulating material wrapped around pipes, boilers, etc, or laid in a roof loft, to prevent loss of heat
2. the act or process of applying lagging
3. (Building) a wooden frame used to support an arch during construction
1. the act of covering a boiler, oil tank, etc., with heat-insulating material.
2. the covering formed.
3. the material used.
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|Noun||1.||lagging - used to wrap around pipes or boilers or laid in attics to prevent loss of heat|