What does "strongbox" mean?

A sturdy box with a lock, for storing valuables.

What is a synonym for "strongbox"?

Common synonyms include: arks, bank, bursary, cash register, cashbox, chest.

noun

noun ·Rare ·Advanced level

Noun

1
A sturdy box with a lock, for storing valuables.
"Near-synonyms: safe-deposit box, safe deposit box, safety-deposit box"
2
a strongly made box for holding money or valuables; can be locked wordnet

"Near-synonyms: safe-deposit box, safe deposit box, safety-deposit box"

From strong + box. Compare French coffre-fort.