Origin of linchpin
Examples from the Web for linchpin
At the moment, Yisrael Beiteinu is the linchpin of the coming rightist government.
Bolshevism was the linchpin that held all the other facets of conspiracy together.Soviet Communism’s Collapse Left America’s Far Right Without a Real Foe|Lee Siegel|April 12, 2012|DAILY BEAST
It was one courier in particular that proved the linchpin in Sunday night's operation that killed the al Qaeda leader.Osama bin Laden's Courier: The Man Who Led the U.S. to bin Laden|Josh Dzieza|May 3, 2011|DAILY BEAST
The drawbolt on a linchpin wagon usually has a head made in the form of the jaws of a wrench.Farm Mechanics|Herbert A. Shearer
That I driv yer honour the last three miles without a linchpin!Coaching, with Anecdotes of the Road|William Pitt Lennox
If an axle had broken or a linchpin loosened the race would have been lost.Blazing The Way|Emily Inez Denny
Linchpin, linsh′pin, n. a pin used to keep the wheel of a carriage on the axle-tree.
But suppose anything should break, or a linchpin should give way and let a wheel loose?Coaching Days & Ways|E. D. (Edward William Dirom) Cuming