a form of paperboard, either corrugated or solid, that is used to make containers
containerboard in American English
(kənˈteinərˌbɔrd, -ˌbourd)
noun
any paperboard used in making containers, as corrugated paper or cardboard
Also: container board
Word origin
[1920–25; container + board]This word is first recorded in the period 1920–25. Other words that entered Englishat around the same time include: Unknown Soldier, checkout, fundamentalism, montage, superpower