What does strongbox mean?
A strongbox is a robust, lockable container designed to protect money, valuables, or important documents. Its name combines “strong” with “box,” emphasizing both its secure construction and its familiar container shape. Strongboxes have long been used by households, businesses, banks, and retailers to safeguard important possessions, and the word can also be used figuratively for any especially secure place of storage. Compared with a safe, a strongbox is generally smaller and easier to carry or conceal, though the boundaries are not absolute. In modern usage, “strongbox” remains an ordinary term for a secure physical storage box, while “digital strongbox” and similar expressions extend the idea to protected electronic storage. The word is useful when describing something intended to be both portable and resistant to unauthorized access.
nounA sturdy, lockable box used for securely storing money, valuables, or important documents.
- A secure, lockable container for money, valuables, or documents.
- A secure place for keeping important or valuable things; sometimes used figuratively.
"The family kept their savings in a small strongbox beneath the floorboards."
"She placed the deed to the house in the strongbox before leaving for the bank."
"The new encryption system effectively turned the company's server room into a digital strongbox."
The regular plural adds “-es” to the final “x” sound.
"The museum stores its oldest documents in several wall-mounted strongboxes."
From cash boxes in old shops to digital vaults today, the strongbox has always reflected one practical idea: valuable things need a place that is hard to open.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does strongbox come from?
“Strongbox” is a compound formed in the modern period from “strong” and “box.” “Strong” descends through Old English from a Germanic word meaning powerful, forceful, or capable of resisting; “box” entered Middle English from Old French “boisse,” referring to a container. The compound developed as a plain description of a secure container and later became established for boxes fitted with locks or strong fastenings.
Related word forms
How strongbox is actually used
“Strongbox” is standard in British and American English. It is usually a physical box, although figurative uses referring to secure storage are also possible.
Easily confused with strongbox
“Strongbox” is the usual one-word spelling, while “strong box” is a less common two-word variant.
A strongbox is a box designed for secure storage, whereas a safe is typically a larger, more heavily secured cabinet or chamber.