n. a construction material of pre-made boards used for walls and ceilings, usually a gypsum-core with a paper surface.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. 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
Word Usage
"Drywall, also known as wallboard, is made from gypsum coated with paper and is used in walls and ceilings."