wash-out

washout

[wosh-out, wawsh-]
noun
1.
a washing out of earth, gravel, etc., by water, as from an embankment or a roadway by heavy rain or by a flash flood.
2.
the hole, break, or erosion produced by such a washing out.
3.
Also, wash-out. Aeronautics. a warp in an airfoil that gives a decrease in the angle of attack toward the tip. Compare washin.
5.
Informal. an utter failure.
6.
Informal. a person who has failed a course of training or study: air force washouts.

Origin:
1870–75; noun use of verb phrase wash out

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
washout

noun
1. the channel or break produced by erosion of relatively soft soil by water; "it was several days after the storm before they could repair the washout and open the road" 
2. the erosive process of washing away soil or gravel by water (as from a roadway); "from the house they watched the washout of their newly seeded lawn by the water" 
3. someone who is unsuccessful [syn: flop
WordNet® 3.0, © 2006 by Princeton University.
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