Clear (CLR) by Jana L | Mar 1, 2022 | Glossary of Terms, Glossary of Terms -C, Uncategorized | 0 comments 1A board which is free from defects. A term including the higher grades of lumber sound, relatively free of blemishes. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.