Also found in: Dictionary, Thesaurus, Wikipedia.


, lynchpin
a pin placed transversely through an axle to keep a wheel in position
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a wedge-shaped rod that fits into a hole in a part and prevents another part from shifting to one side while fastened to the first part. The shape of a linchpin prevents the pin from falling out of the hole. Linchpins were used in horse-drawn vehicles to prevent the wheels from coming off the axle. They are used for unstrained joints between parts, for example, as safety pins in hand grenades.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
Based in Australia, Canada, the United Kingdom and the United States, Azimuth and Linchpin operate in the strategic fields of computer network operations and vulnerability research for intelligence partners and other government, defense and security agencies around the world.
"He can be (the linchpin) because he can do anything out there.
Linchpin offers tools to help people go from waiting for instructions (a time drag for bosses and an underutilization of good employees) to figuring out what to do next, which makes everyone look good.
On sentencing Wright, Judge Roger Thorn said: "You were the linchpin to it all."
A federal judge dismissed the men's convictions in 2006 after ruling a "linchpin" witness in their cases received a deal from prosecutors that was never disclosed to the defence.
Nolan said: "Ben has been the linchpin of our defence and has been nothing short of terrific.
The expected four-month absence of Emirates linchpin Cesc Fabregas (below) signals the beginning of the end for the Gunners' season.
A FATHER who who died with his son as they cleared up flood damage at a rugby club was described as a community "linchpin".
When courts evaluate whether additional insured coverage should be limited to vicarious liability, the contract language establishing the insurance requirement becomes the linchpin of the analysis.
Given their expertise, could they not have warned the administration of its folly in focusing on Iraq as the linchpin of its Middle East policy?
Brian Dalling, group finance director, said: "Bangor has been a linchpin in our growth strategy for this year and we have seen a real growth in business following the appointment of Richard Hughes as regional director earlier in the year."