Legal Definition of Premises:  (a) The basis or bases for an argument presented to a court; the real substance of a lawsuit; the introductory proposition that should lead to a conclusion. (b) Property | Gain a clear understanding of the legal definition of premises and its impact on your business operations. Learn how premises serve as the foundation for legal arguments and how they relate to property and liability. Protect your business from potential lawsuits and ensure legal compliance by comprehending the importance of premises. Communicate effectively with your legal counsel and build a strong defense or claim based on the premises of your case. Familiarize yourself with essential legal terms and maintain a safe environment for employees, customers, and visitors