blueboard

noun

blue·​board ˈblu-ˌbȯrd 

US

: wallboard that has a surface of light blue paper designed to be covered with a thin coat of plaster after installation

Though Home Front could have opted to apply plaster over metal lath for the walls, they went with a common time-saving method instead, hand-troweling plaster over blueboard, a special drywall made for this purpose.

—Keith Pandolfi, This Old House, May 2011

Word History

First Known Use

1984, in the meaning defined above

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