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Wallboard

noun

Noun

1
A construction material of pre-made boards used for walls and ceilings, usually a gypsum core with a paper surface. countable, uncountable
"Hooks come with screws for use in plaster or wood and toggles for use in wallboard. One hook should be sufficient to swag a lamp from a ceiling outlet."
2
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 wordnet

From wall + board.

Unscramble this word: wallboard