a device for showing the operating condition of some system
a signal for attracting attention
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
a mechanical device that prevents a vessel from moving
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 television reporter who coordinates a broadcast to which several correspondents contribute
secure a vessel with an anchor; "We anchored at Baltimore"
fix firmly and stably; "anchor the lamppost in concrete"