Answer:
Knotty Pine refers to a type of wood, specifically pine, that has prominent knots on its surface. These knots are caused by branches or other imperfections in the tree, and they create a unique and rustic aesthetic when used in furniture. Knotty Pine furniture often has a more natural and textured look, with the knots adding character and visual interest to the piece. In old work the knotty parts of pine were avoided, only the clear wood was used, except where painted.