gypsum board

/ˌdʒɪpsəm bɔərd/

Definitions of gypsum board

1. noun

   wallboard with a gypsum plaster core bonded to layers of paper or fiberboard; used instead of plaster or wallboard to make interior walls
   synonyms: plasterboard

   types:

   Sheetrock

   a kind of plasterboard

   type of:

   dry wall, drywall, wallboard

   a wide flat board used to cover walls or partitions; made from plaster or wood pulp or other materials and used primarily to form the interior walls of houses