matchboard
/ˈmætʃˌbɔrd/
noun
- A board with a tongue on one edge and a groove on the other, used to create a tight joint when fitted together with similar boards, often for flooring, paneling, or siding.
- We chose oak matchboard for the new floor because it fits together snugly.
- The carpenter installed matchboard along the hallway walls for a clean, seamless look.
- The old shed was built with matchboard, which kept out drafts better than plain planks.