Reminds me of the time when my uncle asked me to go get the dolly from his garage. I, being a kid and having no context for why he’d need a dolly, spent a few minutes in his garage but eventually returned with a Barbie doll still in its box. Fortunately, my uncle just chuckled, clasped my shoulder, and went to the garage to get his dolly so he could move his laundry machine. I often remember that day as a lesson in humility.

what’s a dolly then? some kind of skateboard, right?

A dolly is a wheeled tool for moving heavy stuff. They come in various shapes and sizes. They generally look something like this

That’s a wheely transporter

Wheely transporter? Everyone I’ve ever known has always called these “dollies”. Maybe it’s just an American thing. Also I actually looked up dolly to get this image.