- A small lockable box, typically made of metal, in which valuables may be kept.More example sentences
safe, safety deposit box, cash/money box
- Here they find a mysterious island where their father has a metal strongbox buried in a ruined outhouse.
- Wastes were also discharged to the river from a paper mill, a hospital, and a strongbox manufacturing factory.
- For Prints, Conner arranged a set of his fingerprints produced at the Palo Alto Police Department along with a strongbox containing file folders.