a passenger bus operating on tires and having an electric motor that draws power from overhead wires.
Origin of trolley bus
First recorded in 1910–15
Also called trackless trolley, trolley coach.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for trolleybus
"I shouldn't be surprised if they were even falsus in trolleybus," I put in, with a feeble attempt at humor.Peeps at People|John Kendrick Bangs
British Dictionary definitions for trolleybus
/ (ˈtrɒlɪˌbʌs) /
an electrically driven public-transport vehicle that does not run on rails but takes its power from an overhead wire through a trolley
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012