Definition of overfall
1 : a turbulent surface of water caused by strong currents setting over submerged ridges or shoals or by winds opposing a current —usually used in plural
3 : a place provided for the overflow of surplus water (as from a canal or lock)
4 : a sudden increase of depth in the bottom of the sea or other large body of water
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.
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 overfall? Please tell us where you read or heard it (including the quote, if possible).