overfall

(redirected from overfalls)
Also found in: Encyclopedia.

overfall

(ˈəʊvəˌfɔːl)
n
1. (Physical Geography) a turbulent stretch of water caused by marine currents over an underwater ridge
2. (Civil Engineering) a mechanism that allows excess water to escape from a dam or lock
3. (Physical Geography) the point at which a sewer or land drainage discharges into the sea or a river
References in periodicals archive ?
70 fell five miles northwest of the Blankeney Overfalls bell buoy, along with Strasser, von Lossnitzer and 20 crewmen.
In nature, air bubble entrainment into water takes place at spillways of weirs, at river overfalls, in mountain streams and in breaking waves on the ocean surface.
This violent stretch of water, with its chaotic overfalls, sea surges and big whirlpools, is seen as one of the best tidal resources on earth.