wallboard

(′wöl′börd)

(materials) Panels of various materials for surfacing ceilings and walls, including asbestos cement sheet, plywood, gypsum plasterboard, and laminated plastics.

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A rigid sheet composed primarily of wood-pulp, gypsum, or other materials; may be fastened to the frame of a building to provide an interior surface finish; the long edges of the board usually are tapered to provide easy treatment of the joints when board is erected. Also see dry wall.

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IN BRIEF: An artificially prepared sheet material for use in covering ceilings, etc.

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The noun has one meaning:

Meaning #1: thin sheet used to cover walls or partitions

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