washout

IPA: wˈɑʃaʊt

An act of washing or cleaning the inside of something.
An appliance designed to wash out the inside of something.
The erosion of a relatively soft surface by a sudden gush of water; also, a channel produced by this action.
(originally US, rail transport, road transport) A breach in a railway or road caused by flooding.
(slang)
A sporting fixture or other event that cannot be completed because of rain.
An overwhelming victory; a landslide.
A total failure; a disappointment.
An unsuccessful person.
(aviation)
(aeronautics) The aerodynamic effect of a small twist in the shape of an aircraft wing.
(Britain, air force slang) A destroyed aeroplane.
(Britain, originally air force slang) A trainee who drops out of a training programme.
(medicine)
A period between clinical treatments in which any medication delivered as the first treatment is allowed to be eliminated from a person's body before the second treatment begins.
(also biology) The cleaning of matter from a physiological system using a fluid; also, the fluid used for such cleaning; or the matter cleaned out from the system.
(meteorology) The action whereby falling rainwater cleans particles from the air.
(mining) A place in a mine where ore has been washed away by a flow of water.

wash out

IPA: wˈɑʃˈaʊt

To wash the inside of something.
To remove something by washing.
To be removed by washing.
(idiomatic) To wear away by the flow of water; to erode.
(idiomatic) To cancel due to bad weather.
(idiomatic) To lose traction while going around a turn, especially in cycling, motorsports and skiing/snowboarding.

IPA: wˈɑʃˈaʊt

Alternative form of washout [An act of washing or cleaning the inside of something.]