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]
(..) Take notes. I'm not going to repeat myself. I love you. The firm operates on a chain of command model. Harvey's your commanding officer. However, Louis Litt, he oversees (..)2011 TvShow: Suits Title: Pilot Season: 1 Episode 1