/ Dictionary / Index B bus line: Meaning and Definition of Find definitions for: bus' line" Pronunciation: [key] the route of a bus or buses. a company that owns and operates buses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. buskined busload Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language