Twirl is a word that means to spin around quickly. Let me explain it to you like you're 5 years old.
Have you ever spun around in circles really fast until you got really dizzy and had to stop? That's kind of like twirling. When you twirl, you spin around a lot, but you usually stay in the same place.
People often twirl when they're dancing or doing gymnastics. It's a fun way to add a little extra flair to your moves. Twirling can also be used as a way to show off your fancy clothes or a pretty dress.
So, if you ever see someone spinning around in circles really fast, just remember - they're twirling!