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gypsum board

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
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    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
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