IPA: /ˈpeɪpərbɔrd/
KK: /ˈpeɪpərbɔrd/
A type of thick paper used for making boxes and other packaging materials.
The toy was packed in a colorful paperboard box.
Paperboard → It is formed from "paper" (from Latin *papyrus*, meaning a writing material made from the pith of the papyrus plant) and "board" (from Old English *bord*, meaning a flat piece of material). The word "paperboard" refers to a flat material made from paper, typically thicker than regular paper.
Think of 'paper' as a writing material and 'board' as a flat piece. Together, they create a flat material made from paper, which is what paperboard is.