From Longman Dictionary of Contemporary Englishtrolleybustrol‧ley‧bus /ˈtrɒlibʌs $ ˈtrɑː-/ noun [countable] TTCa bus that uses power from electric wires above the street
Examples from the Corpus
trolleybus• Plans were prepared for trolleybus conversion on a large scale.• Hammersmith trolleybus depôt disappeared in a redevelopment programme of that area.• Again London led, its last trolleybus ran in 1962.• Consider installing a tram or trolleybus system.• During 1939, following the trolleybus conversions in North London, a number of rolling stock changes were made.• The Bill authorizing the conversion of a number of tram routes to trolleybus operation received Royal Assent on 31 July.• In spite of the war, trolleybus conversions continued for the time being in other parts of London, but did not affect the Croydon area directly. 