The crossword solution for the term 'SHUT SECURELY' is the word 'SEAL'. A SEAL is an object or device that is used to close off an area or container, usually to keep it secure. Seals are often used to prevent tampering or unauthorized access. They can also be used to indicate authenticity or ownership. Seals are commonly used on documents, envelopes, and other containers to ensure that they remain secure and unopened.