washout

washout
/wosh"owt', wawsh"-/, n.
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. Aeron. a warp in an airfoil that gives a decrease in the angle of attack toward the tip. Cf. washin.
4. rainout.
5. Informal. an utter failure.
6. Informal. a person who has failed a course of training or study: air force washouts.
[1870-75; n. use of v. phrase wash out]

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