Keystone Meaning

There are 2 meaning(s) for word Keystone

Meaning 1 : a central cohesive source of support and stability

    Example : the keystone of campaign reform was the ban on soft money

    Synonyms : anchor,  backbone,  linchpin,  lynchpin,  mainstay
Meaning 2 : the central building block at the top of an arch or vault

    Synonyms : headstone,  key


Similar words of Keystone :