Fillet/fɪˈleɪ/ Definition 1 of 4Pro Tip 1/3Culinary Usage The term 'fillet' often appears on restaurant menus and in recipes. I chose the beef fillet from the menu. Pro Tip 2/3Pronunciation Variant 'Fillet' can be pronounced differently in America (fil-AY) and Britain (FILL-it). Would you like a fillet or a whole fish? Pro Tip 3/3Specific Cuts Different meats have specific 'fillet' types like 'tenderloin' in beef. The chef recommends the tenderloin fillet.