Protesters formed 'a human chain' [=they stood next to each other with their arms linked] around the ancient tree to prevent it from being cut down.
In the United States, the President as the commander in chief is at the head of the military 'chain of command'.
I thought he really won the lottery but he was only 'pulling my chain'. [=he was only playing a joke on me]
(..) You know the founder of Benihana. Benihana? Beni Fucking hana. Beni 'fucking' hana,why, why god. Why would You be so cruel as to choose a chain of fucking Hibachi Restaurants to take me down? Long story, short Saurel ratted me out, but not before he ratted out Brad's wife Chantalle. (..)2013 The Wolf of Wall Street