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]
(..) Industrial equipment, global shipping, major construction, and a tiny little foothold in American fast food, specifically a local chain-- Pollos Hermanos. Okay. So what, right? Boetticher's dead. I got no line on who's been bankrolling him (..)2011 TvShow: Breaking Bad Title: Problem Dog Season: 4 Episode 7