
1) Composite material
Found on
https://www.crosswordclues.com/clue/particle-board

Particle board, also known as particleboard and chipboard, is an engineered wood product manufactured from wood chips, sawmill shavings, or even sawdust, and a synthetic resin or other suitable binder, which is pressed and extruded. Particleboard is a composite material. == Characteristics == Particleboard is cheaper, denser and more uniform than ...
Found on
http://en.wikipedia.org/wiki/Particle_board

Sawdust and resin compressed into sheets that can substitute for plywood in many situations.
Found on
http://www.encyclo.co.uk/local/20453

A pressed sheet material made from particles of timber or other ligno-cellulosic material bonded with synthetic resin and/or other organic binder
Found on
http://www.encyclo.co.uk/local/21113

A panel made of compressed, glued wood chips.
Found on
http://www.exhibitoronline.com/glossary/index.html?letter=p

Engineered wood product manufactured by bonding small wood particles with an adhesive and pressed into shhets.
Found on
http://www.furniturecaretips.com/glossary.htm

- Plywood substitute made of course sawdust that is mixed with resin and pressed into sheets. Used for closet shelving, floor underlayment, stair treads, etc.
Found on
http://www.homebuildingmanual.com/Glossary.htm

A substitute for plywood that is composed of sawdust mixed with resin.
Found on
https://blog.capterra.com/handy-construction-glossary-common-terms-defined/

Board manufactured by gluing small flakes or pieces of timber together under pressure. Chipboard is perhaps the best known, but other examples include flakeboard (used to board up damaged windows and doorways) and waferboard. Particle board may be covered in a plastic veneer and used for specialist surfaces
Found on
https://www.encyclo.co.uk/local/21221

Plywood substitute made of course sawdust that is mixed with resin and pressed into sheets. Used for
Found on
https://www.encyclo.co.uk/local/22400

Plywood substitute made of course sawdust that is mixed with resin and pressed into sheets. Used for closet shelving, floor underlayment, stair treads, etc.
Found on
https://www.homebuildingmanual.com/Glossary.htm
No exact match found.