Law of the Fist = (1)Laws are the concepts, theories and principles of the art. (2) application of the concepts, theories and principles, (3) Governing prinicples of the system (4)Selfle Defense Techniques, Freestyle, and Form.
I also agree about executing the laws on an agressor as one of the meanings of Kenpo in the American form.
This would probabley be a good place to explore other possible definitions and check to see if they logically fit, are valid, and true.
Have a nice day