A wax stamp is a type of SEAL that is used to authenticate documents. It is made by melting wax and pressing a design into it, usually with a metal stamp. The design is often a coat of arms or other symbol of authority. Wax stamps are commonly used to certify documents such as contracts, diplomas, and letters. They are also used to decorate items such as books and envelopes. The term 'wax stamp' is derived from the Latin word 'SEAL, ' which means 'to close.'