1. 
   trolley bus
   electric bus running on road and using trolley (wheel attached to pole used for collecting current from overhead electric wire to drive vehicle)
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   trolleybus
   [n] - a passenger bus with an electric motor that draws power from overhead wires
   Found op http://www.webdictionary.co.uk/definition.php?query=trolleybus
   
   
3. 
   trolleybus
   trolley coach noun a passenger bus with an electric motor that draws power from overhead wires
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=trolleybus
   
   
4. 
   trolleybus
   vehicle operated on the streets on rubber tires and powered by electricity drawn from two overhead wires by trolley poles. It is distinct from a ...
   Found op http://www.britannica.com/eb/a-z/t/83
   
   
5. 
   Trolleybus
   A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tram or trolley{fact|date=March 2012}) is an electric bus that draws its electricity from overhead wires (generally suspended from roadside posts) using spring-loaded trolley poles. Two wires and poles are required...
   Found op http://en.wikipedia.org/wiki/Trolleybus
   
   
6. 
   trolleybus
   1. an electrically driven pneumatic-tyred vehicle running without rails on public roads, alone or with a trailer, and drawing its power from an overhead contact line 2. a transport system using trolleybuses
   Found op http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=811-02-43
   
   
7. 
   trolleybus
   1) Autobus 2) Bus 3) Charabanc 4) Coach 5) Double-decker 6) Jitney 7) Motorbus 8) Motorcoach 9) Omnibus 10) Trackless trolley 11) Trolley coach
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/trolleybus/1
   
   

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