/ Dictionary / Index M motor van: Meaning and Definition of Find definitions for: mo'tor van" Pronunciation: [key] a motor truck, esp. one enclosed to protect the cargo. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. motor unit motor vehicle Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language