linchpin
(en)
(noun) a locking pin inserted crosswise (as through the end of an axle or shaft) / (noun) one that serves to hold together parts or elements that exist or function as a unit
Highlighted phrases
linchpin
The Bretton Woods system, already set out in 1944, posited the dollar as the sole linchpin holding together the edifice of global trade and finance.
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9 years, 1 month ago
The linchpin of this social order was the Shah dynasty.
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9 years, 1 month ago
Missouri, the country's cartographic linchpin
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9 years, 4 months ago