What is a lining?
It’s the extra layer of, often silky, material found on the inside of curtains or a jacket.
Clouds are synonymous with negative things such as rain or storms. They can also be used metaphorically to describe a bad experience or situation.
So when every cloud has a silver lining, it means that even if something bad happens, something good comes out of it.
One group of people who really see the silver lining in clouds are storm chasers - they just love them!