Mezzaluna
From Cookipedia
What is a Mezzaluna
Mezzaluna is a two handled food chopper. Mezzaluna means "half moon" in Italian, after the curved shape of the blade, and is the most common name used in the UK. Other names used include herb chopper or hachoir which is its French name. They may be found sold with a cutting board that has a shallow indentation in it, and marketed as a herb chopper.