Definition of wallboard in English:

wallboard

Line breaks: wall|board
Pronunciation: /ˈwɔːlbɔːd
 
/

noun

[mass noun] chiefly North American
1A type of board made from wood pulp, plaster, or other material, used for covering walls and ceilings: install waterproof wallboard around a shower
More example sentences
  • The repair procedures differ depending on whether it is an older wall with lath and plaster, or a newer wall using gypsum wallboard (drywall).
  • The two most common interior wall surfaces are gypsum wallboard, usually referred to as drywall or gyp board, and plaster.
  • Fasten the corners of the gypsum lath or wallboard to the existing lath behind the plaster.
1.1 [count noun] A piece of wallboard: they have chosen wallboards and ceiling sheets in lieu of wood
More example sentences
  • Too eager to be respectful, he knocked more and more forcefully, shaking the brittle wallboards and splintering a few pieces of the flimsy sun-baked wood.

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Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope