Okay, so you know how when you tap on a glass cup it makes a sound? Well, a singing bowl is kind of like a cup that makes a really cool sound when you tap it or play it with a special stick.
The bowl is usually made out of metal and has a special shape that allows it to vibrate and make a sound that can last a long time. When you tap the bowl or rub the stick around the edge, it makes the metal vibrate and that vibration travels through the air, making a sound you can hear.
People like to use singing bowls for meditation, because the sound is very soothing and can help you relax. Some people even believe that the sound can help heal your body and mind.
So that's what a singing bowl is: a special metal cup that makes a beautiful sound when you play it.