A piece of clothing that goes around a person's waist and hangs down to cover the legs.
Skirts are often thought of as something girls or women wear, but some boys and men wear them too.
Examples:
She wore a pretty skirt to the party.
I like to twirl in my skirt.
The skirt is blue and white.
The skirt is too long for me, it touches the ground!
I have a skirt that is as big as a house!
I wear a skirt when I dance.