/ Dictionary / Index L line-hauler: Meaning and Definition of Find definitions for: line-haul•er Pronunciation: (līn'hô"lur), [key] — n. a heavy-duty truck suitable for line-haul transportation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. line-haul line integral Related Content Daily Word Quiz: philately Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language