The term 'Symbol of Approval' can be represented by two crossword solutions: 'STAMP' and 'SEAL'. A STAMP is a device used to make an impression on a surface, usually paper, by applying pressure. It is often used to indicate a date, time, or place of origin, or to authenticate documents. A SEAL is a device used to make an impression on a surface, usually wax or clay, by applying pressure. It is often used to authenticate documents or to signify ownership. Both stamps and seals are symbols of approval, as they are used to authenticate documents and signify ownership.