a turbulent stretch of water caused by marine currents over an underwater ridge
2.
a mechanism that allows excess water to escape from a dam or lock
3.
the point at which a sewer or land drainage discharges into the sea or a river
Examples of 'overfall' in a sentence
overfall
Free overfall can be used as a discharge measuring structure by a single measurement of end flow depth.
Ali R. Vatankhah 2015, 'Power-law free overfall in subcritical flow regime', Ain Shams Engineering Journalhttp://www.sciencedirect.com/science/article/pii/S2090447914001518. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)