1.A recognized causal link or principle whose violation must or should result in a penalty as failure, injury, loss, or pain.
2.The binding rules of conduct meant to enforce justice and prescribe duty or obligation, and derived largely from custom or formal enactment by a ruler or legislature. These laws carry with them the power and authority of the enactor, and associated penalties for failure or refusal to obey. Law derives its legitimacy ultimately from universally accepted principles such as the essential justness of the rules, or the sovereign power of a parliament to enact them.
Use law in a sentence