Argul is a kind of musical instrument that people in some parts of the world use to make music. It looks like a really long straw with holes in it. When someone blows air into one end of the straw and covers up the holes with their fingers, it makes different notes and sounds.
People have been using arguls for a very long time, maybe even hundreds or thousands of years! They come from parts of the world like the Middle East and North Africa. Some people call it a "double-pipe" instrument because there are actually two pipes inside the straw that work together to make music.
Arguls used to be made out of bamboo, but now most of them are made out of plastic or metal. They are still used today in many different kinds of music, like traditional folk music or even modern pop songs! It takes a lot of practice to learn how to play the argul well, but it can be a lot of fun and make really cool sounds.