a line of people, esp. to provide strength or protection; also, humans seen as interconnected body
They formed a human chain and pull him out of the mire.
Figueroa said he and the security guard formed a human chain, reaching into the flooded garage and pulling the two men to safety.
A mix of young and old began to form a human chain across the barricades.
Residents attempted to form a human chain, but soldiers still raided homes and opened fire.