When something skirrs, it moves quickly and lightly over a surface, like when a small animal runs away.
Skirrs is usually used to talk about small things moving fast, like little animals or leaves in the wind.
Examples:
The mouse skirrs across the floor.
The squirrel skirrs up the tree.
The leaves skirr along the ground.
The rabbit skirrs away from the dog.
The tiny bug skirrs across the table so fast!
The little bird skirrs through the bushes.