Originally Posted by Oxford English Dictionary

law

• noun 1 a rule or system of rules recognized by a country or community as regulating the actions of its members and enforced by the imposition of penalties. 2 such rules as a subject of study or as the basis of the legal profession. 3 statute law and the common law. 4 a statement of fact to the effect that a particular natural or scientific phenomenon always occurs if certain conditions are present. 5 a rule defining correct procedure or behaviour in a sport. 6 something having binding force or effect: his word was law. 7 (the law) informal the police.