/ Dictionary / Index M motor truck: Meaning and Definition of Find definitions for: mo'tor truck" Pronunciation: [key] truck (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: motortruck (Thesaurus) motor torpedo boat motor unit 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