Definition of wheel trolley
: a grooved rotating wheel attached to the end of the trolley pole of an electric railway car or bus for making constant rolling contact with the trolley wire
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up wheel trolley? Please tell us where you read or heard it (including the quote, if possible).