The term 'OUTER LAYER OF WOOD' can be summarized by the crossword solution 'VENEER' (6 letters). VENEER is a thin layer of wood that is applied to the surface of a piece of furniture or other object. It is usually made from a hardwood, such as mahogany or walnut, and is used to give the object a more attractive appearance. VENEER is often used in place of solid wood because it is less expensive and easier to work with.