LAW means “The system of rules that a particular country or community recognizes as regulating the actions of its members”.
Law is an English Noun and it does not have any full form. Although, there are full form of degrees which are related to law. Two of them are :-
LLB – Bachelor of Laws
It is an Under-Graduate degree in the field of Law.
LLM – Master of Laws
It is a Post-Graduate degree in the field of Law.