Breadcrumb Home > Dictionary > Index M motor voter law: Meaning and Definition of Find definitions for: mo'tor vot'er law" Pronunciation: [key] a law that enables prospective voters to register when they obtain or renew a driver's license. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. motor vehicle motorway ✖ Related Content Daily Word Quiz: tatterdemalion Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language