Legal Definition of Motion: An oral or written application to a court or a judge for a ruling or order. In most instances, the motion requests a ruling to be made in favor of the one making the motion (the applicant) | Learn about the legal definition of motion and its importance in the legal system. Discover the different types of motions and how they can help individuals and businesses advocate for their rights and streamline the legal process. Understand how motions promote fairness and transparency in the judicial system. Find out how filing a motion can protect your rights as a business owner