Crossword clues for lynchpin
Longman Dictionary of Contemporary English
Wiktionary
alt. 1 a pin inserted through holes at the end of an axle, so as to secure a wheel 2 (context figuratively English) a central cohesive source of stability and security; a person or thing that is critical to a system or organisation. n. 1 a pin inserted through holes at the end of an axle, so as to secure a wheel 2 (context figuratively English) a central cohesive source of stability and security; a person or thing that is critical to a system or organisation.
WordNet
Usage examples of "lynchpin".
A target that seems to be the lynchpin holding two otherwise unfriendly armies together.
Serena believed that their coveted knowledge might be the lynchpin on which ultimate victory against the Synchronized Worlds would hang.
Quin was the lynchpin of the scheme that was increasingly obsessing him, it had prevented him from taking any sleep himself, it had made him impatient of Quin’s rest and impatient during his first conversation with the man, so much so that Ethan Clark had intruded upon their conversation and eventually commandeered it.