keystone

Nouns

  • (n) a central cohesive source of support and stability
    • faith is his anchor
    • the keystone of campaign reform was the ban on soft money
    • he is the linchpin of this firm
    backbone, linchpin, lynchpin, anchor, mainstay,
  • (n) the central building block at the top of an arch or vault headstone, key,

Synonyms

backbone linchpin lynchpin anchor mainstay headstone key

Words of close approximity

Keystone State Keystone Stater