plasterboard

[ plas-ter-bawrd, -bohrd, plah-ster- ]
/ ˈplæs tərˌbɔrd, -ˌboʊrd, ˈplɑ stər- /

noun

a material used for insulating or covering walls, or as a lath, consisting of paper-covered sheets of gypsum and felt.

Origin of plasterboard

First recorded in 1905–10; plaster + board

British Dictionary definitions for plasterboard

plasterboard
/ (ˈplɑːstəˌbɔːd) /

noun

a thin rigid board, in the form of a layer of plaster compressed between two layers of fibreboard, used to form or cover walls