Principle Law and Legal Definition

Principle is a basic rule, law, or doctrine. It refers to a law or rule that has to be, or usually is to be followed. For example, indemnity principle is a rule of insurance law which says an insurance policy should not confer a benefit greater in value than the loss suffered by the insured.

Principle can also be a normative rule or code of conduct or a law or fact of nature underlying the working of an artificial device.