dʌd wɒʃ wɔʃ ˈwɒʃaʊt someone who is unsuccessful 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 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