IPA: /ˈlaɪnərbɔrd/
KK: /ˈlaɪnərˌbɔrd/
A type of thick paper used to create the outer layers of corrugated boxes.
The manufacturer chose a high-quality linerboard to ensure the boxes were sturdy and durable.
Linerboard → The word is formed from "liner" (from the verb 'line', meaning to cover or coat) and "board" (from Old English 'bord', meaning a flat piece of material). Linerboard refers to a type of paperboard used to line the inside of boxes or containers.
Think of 'lining' something to cover it and 'board' as a flat material — that's why linerboard is a flat material used to cover or line boxes.