English dictionary



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English noun: keystone

1. keystone (cognition) a central cohesive source of support and stability


SamplesFaith is his anchor.
The keystone of campaign reform was the ban on soft money.
He is the linchpin of this firm.


Synonymsanchor, backbone, linchpin, lynchpin, mainstay


Broader (hypernym)support

2. keystone (artifact) the central building block at the top of an arch or vault


Synonymsheadstone, key


Broader (hypernym)building block


Narrower (hyponym)coign, coigne, quoin


Part meronymarch









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