A pizzelle iron is an Italian cooking instrument, originally made of iron but now more usually made with aluminium. It's a little like a waffle iron and is used to make thin, crisp cookies or wafers, usually sweet and frequently flavoured with anise.
Pizzelle simply means 'little Pizza' in Italian, but don't be misled - pizzelle irons don't make anything like Pizza as we know it.
Pizzelle irons are available for stovetop use or in electric versions.