Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Constructionfiberboardfi‧ber‧board /ˈfaɪbəbɔːd $ -bərbɔːrd/ noun [uncountable] TBCthe American spelling of fibreboardExamples from the Corpusfiberboard• The original targets were made out of fiberboard, and their thickness and weight was based on the human body. ldoceonline.com