/ Dictionary / Index T trolley bus: Meaning and Definition of Find definitions for: trol'ley bus" Pronunciation: [key] a passenger bus operating on tires and having an electric motor that draws power from overhead wires. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trolleybus (Thesaurus) trolley trolley car Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language