The term 'BOW APPLICATION' can be summarized by two crossword solutions, RESIN and ROSIN. RESIN is a natural or synthetic compound that is typically used as an adhesive or sealant. It is often used in the production of furniture, boats, and other items. ROSIN is a type of RESIN that is derived from plants and is used in a variety of applications, such as in the production of paints, varnishes, and adhesives. Both resins are commonly used in the application of bows to stringed instruments, such as violins and cellos.