noun[ U ]mainly UKuk/ˈplɑː.stə.bɔːd/us/ˈplæs.tɚ.bɔːrd/(US usually drywall, wallboard)
石膏灰泥板
material consisting of two sheets of heavy paper with a layer of plaster between them, used to make walls and ceilings before putting on a top layer of plaster