strongbox

American  

[strawng-boks, strong-] / ˈstrɔŋˌbɒks, ˈstrɒŋ- /

noun

1. a strongly made, lockable box or chest for safeguarding valuable possessions, as money, jewels, or documents.

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strongbox British  

/ ˈstrɒŋˌbɒks /

noun

1. a specially designed box or safe in which valuables are locked for safety

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Etymology

Origin of strongbox

First recorded in 1675–85; strong + box ¹

Example Sentences

See Examples For:

strongbox

The jewel of the program was the Parthenon, which was part temple to Athena and part strongbox for the tribute that flowed to Athens.

From The Wall Street Journal ● Apr. 10, 2026

By swiping from left to right, users can switch to a "strongbox" environment offering secure applications, many developed by fellow Swiss firm Proton.

From Barron's ● Mar. 4, 2026

The outlet shared Damore saw a metal strongbox later that evening under his father’s bed.

From Fox News ● Jul. 20, 2020

Or where a car understood to symbolize classic American muscle cannot break free of the blank strongbox in which it is imprisoned.

From Salon ● Jun. 27, 2018

A table, an iron strongbox, and a stool sit in the center of the room.

From "The Inquisitor's Tale" by Adam Gidwitz