noun
roof boards; ceiling boards
Refers to the boards used for roofing or ceiling in traditional Japanese architecture.
古い家の裏板が傷んでいたので、大工に張り替えてもらった。
The roof boards of the old house were damaged, so I had a carpenter replace them.
noun
back board (of furniture)
The board forming the back panel of a piece of furniture, such as a cabinet or chest.
この本棚の裏板は薄いベニヤでできている。
The back board of this bookshelf is made of thin plywood.