drywall
noun [ U ] US uk/ˈdraɪ.wɔːl/ us/ˈdraɪ.wɑːl/ (UK plasterboard)
（建筑用）灰泥板;纸面石膏板
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