Definition of spark arrester
1 : a device for preventing the escape of sparks from a smokestack; especially : a framework of wire in the smokebox of a steam locomotive to arrest the escape of cinders
2 : a device to minimize or prevent electric sparking at a place where a circuit is made and broken
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 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 spark arrester? Please tell us where you read or heard it (including the quote, if possible).