Pocket wagon

A pocket wagon is like a special wagon that is designed to carry big, heavy things like other wagons or sometimes even cars. It's kind of like a really strong and sturdy truck for trains.

The reason it's called a "pocket wagon" is because it has these special pockets or compartments where the things it's carrying can fit snugly and securely, so they don't wobble around and cause any accidents.

Sometimes, the pocket wagon even has a special mechanism that lets it load and unload the heavy things it's carrying all on its own! It's like magic, but instead of a wand, it's a machine that makes everything super easy and efficient.

So, the next time you see a train with a bunch of pocket wagons zooming by, you'll know that they're carrying some really important and heavy stuff that needs to be transported across long distances.