A sudden snapping of the teeth.
To grind (one's teeth) in pain or in anger.
To run away.
To grind between the teeth.
To clash together violently.
The act of scratching an itch.
A light scratching sound, like a small animal burrowing.
To scratch so as to relieve an itch or irritation.
To make a light scratching sound, like a small animal burrowing.