Washout

Noun

1. An act of washing or cleaning the inside of something.
2. An appliance designed to wash out the inside of something.

   "The cistern was fitted with washouts and air-valves."

3. The erosion of a relatively soft surface by a sudden gush of water; also, a channel produced by this action. A breach in a railway or road caused by flooding.
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.

   "As an actor he was a complete washout, so he went back to accounting."