What is the meaning of keystone?

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, backbone, linchpin, lynchpin
The central building block at the top of an arch or vault.
- synonyms: key, headstone

|15 years ago|846 views|share |citing

APA	WordNet. (2010). keystone. Retrieved September 20, 2026, from http://smartdefine.org/keystone/definitions/1205258
Chicago	WordNet. 2010. "keystone" http://smartdefine.org/keystone/definitions/1205258 (accessed September 20, 2026).
Harvard	WordNet 2010, keystone, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/keystone/definitions/1205258>.
MLA	WordNet. "keystone" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/keystone/definitions/1205258>

Alternative definitions by