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]
(..) quiet to talk. You don't give the orders here. I'm not giving an order. Why aren't you in chains? He's not my prisoner. No? What is he? We're allies. You fucking traitor. (..)2015 TvShow: Game of Thrones Title: Hardhome Season: 5 Episode 8