Legal Definition of Ordinance: A local law; a law passed by a legislative body of a city or township or other local government; a statute; a rule | Learn about the legal definition of ordinances and their importance for business owners. Understand how ordinances regulate land use, noise levels, business licensing, health and safety, and more. Discover the benefits of complying with ordinances, including legal compliance, avoiding disputes, protecting public health and safety, and building trust with customers. Stay informed and contribute positively to your community