Definition of waste gate
1 : a gate by which superfluous water (as of a reservoir) is discharged
2 : a device for controlling the pressure in the nozzle box of a turbosupercharger by discharging into the free atmosphere a portion of the exhaust gases that would otherwise pass through the turbine wheel : blast gate
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 waste gate? Please tell us where you read or heard it (including the quote, if possible).