buildingboard

noun
UK /ˈbɪldɪŋbɔːd/
US /ˈbɪldɪŋbɔːrd/

A building board is a flat piece of material used to make walls or floors in a house.

The workers nailed the building board to the frame of the new house.


OTHER MEANINGS

2. A board used as a base for model building or craft projects.

He glued the tiny house onto a building board for his school project.

3. A display board showing plans or progress of a building project.

The architect pinned the new drawings to the building board.

4. A toy consisting of boards and pieces for making structures.

The children played with a building board set, making towers and bridges.