/ Dictionary / Index M motor sailer: Meaning and Definition of Find definitions for: mo'tor sail"er Pronunciation: [key] a yacht having sails and an engine as an alternative or auxiliary means of propulsion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. motor root motor scooter Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language