English noun: keystone | |||
1. | keystone (cognition) a central cohesive source of support and stability | ||
Samples | Faith is his anchor. The keystone of campaign reform was the ban on soft money. He is the linchpin of this firm. | ||
Synonyms | anchor, backbone, linchpin, lynchpin, mainstay | ||
Broader (hypernym) | support | ||
2. | keystone (artifact) the central building block at the top of an arch or vault | ||
Synonyms | headstone, key | ||
Broader (hypernym) | building block | ||
Narrower (hyponym) | coign, coigne, quoin | ||
Part meronym | arch | ||