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]
(..) They followed Mance. They won't follow anyone else. What about you? Hard to lead when you're in chains. What if I unchained you? Why would you do that? Because you are not my enemy. And I'm not yours. (..)2015 TvShow: Game of Thrones Title: Kill the Boy Season: 5 Episode 5
(..) Two of my sisters had it. They were covered with it. They acted like animals. Hide. Hide! Put him in chains. You want me alive so you can torture me? Sansa Stark? I saw her riding on the East Road with Littlefinger. (..)2015 TvShow: Game of Thrones Title: Kill the Boy Season: 5 Episode 5