a material made from wood fibers compressed into sheets, having many household and industrial uses.
Origin of hardboard
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a thin stiff sheet made of compressed sawdust and wood pulp bound together with plastic adhesive or resin under heat and pressure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012