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{%type%} Definitions

WordNet 3.0Copyright Princeton University


Short "hint"

n. - The central building block at the top of an arch or vault; A central cohesive source of support and stability.

Usage examples (37)
  • The keystone of campaign reform was the ban on soft money
  • Carved on each side of the niche above the keystone is a
  • At its simplest, a keystone is a device for harvesting and storing power.
  • A keystone is the stone atop an arch, and has this shape, narrower at one end. for more
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