Definition of flying sap
: a sap constructed well to the front under enemy fire and covered by using two gabions filled with earth and pushed forward side by side
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 flying sap? Please tell us where you read or heard it (including the quote, if possible).