Canon Law - A term used primarily within the Roman Catholic church to refer to a collection of church laws.

Broadly, all the laws, both divine and ecclesiastical, universal and particular, of the Roman Catholic Church. More narrowly, the laws that appear as canons in the Code of Canon Law and the Code of Canons of the Eastern Churches. (RCEC).

In Western culture, canon law is the law of the Roman Catholic and Anglican churches. The Eastern Orthodox concept of canon law is similar to but not identical to the more legislative and juridical model of the West. In both traditions, a canon is a rule adopted by a council (From Greek kanon/?a???, for rule, standard, or measure); these canons formed the foundation of canon law. (wikipedia)