sheet rock
English
    
    Etymology
    
Originally a trade name
Noun
    
- Pre-hardened plaster of Paris (gypsum) sold in large panels and used as a wall surface in building construction.
- In North America, use of sheet rock has virtually replaced plaster and lathe for interior walls in new construction.
 
Synonyms
    
- (gypsum sheeting for wall surface construction): drywall, wall board
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