Spline by Jana L | Mar 3, 2022 | Glossary of Terms, Glossary of Terms -S, Uncategorized | 0 comments Also known as “slip tongues” these are used to reverse or change the direction when installing tongue and groove hardwood flooring. Submit a Comment Cancel replyYour email address will not be published.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.