yo-yo

It's a toy you can play with by winding and unwinding the string. It's fun to watch it move up and down.

The yo-yo is an old toy, but it's still popular today. Many people enjoy it as a hobby because they can learn various tricks.

The yo-yo is believed to have originated in Greece 2,500 years ago. It became a huge fad in the United States in the 1920s, and now there are even professional yo-yo competitions.

In modern times, the term "yo-yo effect" is often used in dieting or the stock market, referring to fluctuations in values. The yo-yo has transcended its role as a simple toy and is now used as a tool for artistic performances, with professional yo-yo players boasting large followings on social media.