In American English, fillet is a mechanical drawing term for a rounded edge on a machined solid. In Australian English, fillet is the same as filet in American English. They just tend to use more double letters down under, as in jewellry. Try using one of those alternate English spelling dictionaries that came with your word processor.
No, we do not know exactly what a scotch fillet is. Ask your butcher, if you can find one.
