Home › Words › H › hardboardhardboardhardboard means A high-density chipboard.EtymologyFrom hard + board.nounA high-density chipboard.e.g.“The compartment ceiling panels are of plastic material backed with ply or hardboard panels.” — 1951 May, “British Railway Standard Coaches”, in Railway Magazine, page 328:verbTo cover with hardboard.Definitions & examples from Wiktionary (CC BY-SA 3.0).