Strongbox (noun)

1. A sturdy and secure container, usually made of metal, used for storing valuables, money, or important papers.
2. A safe or vault used to protect valuables from theft or damage.

Origin:

Derived from the adjective 'strong', meaning resistant to force or damage, and the noun 'box', meaning a container for holding or storing objects.

Examples:

1. The strongbox was filled with gold coins and precious gems, and was kept under lock and key in the banker's office.
2. The strongbox was made of heavy steel and was impossible to break into without the proper combination.
3. The strongbox was passed down from generation to generation, and was a symbol of the family's wealth and prosperity.
4. The strongbox was hidden in the basement of the old mansion, and its location was known only to a few trusted family members.
5. The strongbox was finally opened after many years, revealing a treasure trove of old letters, documents, and photographs.