Definition of spring switch
: a switch consisting of a pair of split switch points held in running position by a stiff coil spring and designed to return to that position after being thrown over by trailing wheels from the diverging route
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 spring switch? Please tell us where you read or heard it (including the quote, if possible).