a central cohesive source of support and stability: "faith is his anchor"; "he is the linchpin of this firm"
the forestay that braces the mainmast
a prominent supporter; "he is a pillar of the community"
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"
a central cohesive source of support and stability