noun
[ U ] wooden boards that have a long cut along one edge and a long ridge along the other, which are used to connect them together
noun
[ U ] wooden boards that have a long cut along one edge and a long ridge along the other, which are used to connect them together
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005