n. [ 3d scale + board. ] 1. (Print.) A thin slip of wood used to justify a page. [ Obs. ] Crabb. [ 1913 Webster ]

2. A thin veneer of leaf of wood used for covering the surface of articles of furniture, and the like. [ 1913 Webster ]

Scaleboard plane, a plane for cutting from a board a wide shaving forming a scaleboard. [ 1913 Webster ]