a washing out of earth, gravel, etc., by water, as from an embankment or a roadway by heavy rain or by a flash flood.
the hole, break, or erosion produced by such a washing out.
a warp in an airfoil that gives a decrease in the angle of attack toward the tip.
an utter failure.
a person who has failed a course of training or study:
air force washouts.
noun use of verb phrase
The whole project was a washout. A lost cause from beginning to end.]]>
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Dictionary of American Slang and Colloquial Expressions
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.