safe depositEnglishOxford New American Dictionarysafe deposit /sāf dəˈpäzət, , seɪf dəˈpɑzət, dēˈpäzət, diˈpɑzət/ (also safety deposit) ▸ noun [usually as modifier] a strongroom or safe in which valuables may be securely stored, typically in a bank or hotel: a safe-deposit box.