washout

noun

1. An act of washing or cleaning the inside of something.
2. An appliance designed to wash out the inside of something.
3. The erosion of a relatively soft surface by a sudden gush of water; also, a channel produced by this action.
4. A breach in a railway or road caused by flooding.
5. A sporting fixture or other event that cannot be completed because of rain.
6. An overwhelming victory; a landslide.
7. A total failure; a disappointment.
8. An unsuccessful person.
9. The aerodynamic effect of a small twist in the shape of an aircraft wing.
10. A destroyed aeroplane.
11. A trainee who drops out of a training programme.
12. 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.
13. 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.
14. The action whereby falling rainwater cleans particles from the air.
15. A place in a mine where ore has been washed away by a flow of water.