A jumpsuit is a single piece of clothing that covers your entire body from top to bottom, usually like a long shirt and pants combined. It's like wearing one big outfit.
When people talk about jumpsuits, they often mean they're referring to the kind of suit that athletes or dancers wear. For example, astronauts in space suits are actually wearing a special type of jumpsuit. Some models also show off their fashion sense by wearing trendy jumpsuits on the runway or at parties. But if you ask someone if they'd like to go out and get some dinner in a nice restaurant, they might say "Let's dress up and wear our best jumpsuits!" - meaning the fancy kind, of course.
A one-piece item of clothing originally used by parachutists
