To scratch so as to relieve an itch or irritation.
To make a light scratching sound, like a small animal burrowing.
The act of scratching an itch.
A light scratching sound, like a small animal burrowing.
To grind to a fine powder, to pulverize.
To break up biological tissue into individual cells via passage through a narrow opening such as a hypodermic needle.
To mix two solid reactants by repeated grinding and stirring.