What is the meaning of linchpin?

A central cohesive source of support and stability.
- usage: "faith is his anchor"; "the keystone of campaign reform was the ban on soft money"; "he is the linchpin of this firm"
- synonyms: anchor, mainstay, keystone, backbone, lynchpin
Pin inserted through an axletree to hold a wheel on.
- synonyms: lynchpin

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APA	WordNet. (2010). linchpin. Retrieved September 20, 2026, from http://smartdefine.org/linchpin/definitions/1205522
Chicago	WordNet. 2010. "linchpin" http://smartdefine.org/linchpin/definitions/1205522 (accessed September 20, 2026).
Harvard	WordNet 2010, linchpin, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/linchpin/definitions/1205522>.
MLA	WordNet. "linchpin" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/linchpin/definitions/1205522>

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