a composite board having a core made up of strips of wood each more than 1in (2.5 cm) but not more than 3in (7.6cm) wide, laid separately or glued or otherwise joined together to form a slab, to each side of which is glued one or more outer veneers with the direction of the grain of the core strips running at right angles to that of the adjacent veneers, plywood the core of which is made of strips of solid wood more than 30 mm wide, which may or may not be glued together