01 n. The washing out or away of earth, etc., especially of a portion of the bed of a road or railroad by a fall of rain or a freshet; also, a pl…
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1.
The washing out or away of earth, etc., especially of a portion of the bed of a road or railroad by a fall of rain or a freshet; also, a place, especially in the bed of a road or railroad, where the earth has been washed away.
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2.
a complete failure; -- of an enterprise.
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3.
a person who has failed a course of study or training, leaving the program before its completion.