anchor, ground tackle -- (a mechanical device that prevents a vessel from moving)
anchor, mainstay, keystone, backbone, linchpin, lynchpin -- (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")
anchor, anchorman, anchorperson -- (a television reporter who coordinates a broadcast to which several correspondents contribute)
Overview of verb anchor
The verb anchor has 2 senses
anchor, ground -- (fix firmly and stably; "anchor the lamppost in concrete")
anchor, cast anchor, drop anchor -- (secure a vessel with an anchor; "We anchored at Baltimore")