law
UK[lɔː]US[lɑː]
n
The system of rules that a particular country or community recognizes as regulating the actions of its members and may enforce by the imposition of penalties.
n
A rule defining correct procedure or behavior in a sport.
n
A statement of fact, deduced from observation, to the effect that a particular natural or scientific phenomenon always occurs if certain conditions are present.
Etymology
The English word 'law' originates from the Old Norse 'lag', meaning "something laid down or fixed." This term was adopted into Old English as 'lagu' during the period of Scandinavian settlement and rule in England. The underlying concept is of a rule or decree that is set or established by authority, a notion that connects to the Proto-Germanic root 'lagam', meaning "to lay." This etymological journey from a physical act of laying something down to the abstract concept of established rules illustrates a common metaphorical shift, where concrete actions give rise to governing principles of society and conduct.
Analysis
The word 'law' is a simplex word of Old Norse origin. It does not contain separable morphemes in modern English.
Examples
All citizens are expected to obey the law.
The new law will come into effect next month.
Newton's laws of motion describe fundamental principles of physics.