Charter/ˈtʃɑːrtər/ Definition 1 of 4Pro Tip 1/3Historical Importance Charters often have historical significance, forming foundations of laws or institutions. The Magna Carta is a famous historic charter. Pro Tip 2/3Foundational Document Charters can be foundational, outlining principles and governance for organizations. The United Nations Charter establishes its principles. Pro Tip 3/3Legal Binding A charter is legally binding, holding parties to their agreements. The city's charter dictates local government structure.