Definition of Law and Legal system

Law can be defined from various perspectives and it is said that there is no comprehensive definition of Law.
Few definitions are included here:
MD. Abdul Halim: Law is a body of rules, whether formally enacted, or customary, which a state or community recognises as binding on its member or subjects.

Law is a body of rules which are enforceable in a court of law.

Rosco Pound: Law is a species of social engineering, whose function is to maximise the fulfilment of the interests of the community and its members and to promote the smooth running of the machinery of society.

Salmond: Law is the body of principles recognised and applied by the state in the administration of justice.

John Austin: Law is the Command of the sovereign.

Justinian: Law is the king of all mortal and immortal affairs, which ought to be the chief, the ruler and the leader of the noble and the base and thus the standard of what is just and unjust, the commander to animals naturally social of what they should do, the forbidder of what they should not do.

Blackstone: Law is in its most general and comprehensive sense signifies a rule of action and is applied indiscriminately to all kinds of actions, whether animate or inanimate, rational or irrational. Thus we say the law of gravitation or optics of mechanics, as well as the laws of nature and of nations.

Article 152 of Bangladesh Constitution: Law means any Act, ordinance, order, rule, regulation, by-law, notification or other legal instrument, and any custom or usage, having the force of law in Bangladesh. Law is something to ensure justice.

What is Legal System? Legal system is an arrangement which provides some mechanisms or components for the administration of Justice in a state.