Crown copyright is a type of copyright that belongs to the government in some countries. It means that the government holds the special legal rights to reproduce, publish, and distribute any work that belongs to them, which could be different from the rights that other people who created their own work have. The government can decide if it wants to let other people use or copy any of its own work, or if it wants to keep it private. That way, it can make sure important documents and information stay safe and away from people who might try to use it for things that the government doesn't want.