In English "Meow!" is how we describe the sound that a cat makes.

You can turn "meow" into a verb by adding "-ing" to the end:

Lucy is meowing. She must be hungry.

This is true for some other animal noises:

The cow is mooing.

The ducks are quacking.

But it doesn't always work. For example, when a dog or a bear is angry, it makes this sound:

Grr!

But there's a special verb for making this sound, which is "growling".