backwash

noun

1. (countable, uncountable)A backward flow of water, as from oars, a propeller, breaking waves, etc.

   “I looked back to a ferry passing the Statue of Liberty now, its backwash a curving line upon the bay.”

   “They pitched the dragon over the cliff-top, let tide's flow and backwash take the treasure-minder.”

2. (countable, uncountable)The similar flow of air from an aircraft engine.
3. (countable, uncountable)The result or consequence of an event; an aftermath.
4. (countable, uncountable)The saliva, spit or food particles that have flowed back into a drink after someone has drunk from it.
5. (countable, uncountable)The situation where economic growth in one area harms other areas by attracting people and business away from those areas.
6. (countable, uncountable)An obscure place; a backwater.

   “"Reasonable expenses, Nickle. You can't spend much in a backwash like this Tapsfield."”

7. (countable, uncountable)Synonym of washback.

verb

1. To operate a water filter in the reverse direction in order to clean it.
2. (transitive)To affect with backwash.
3. To clean the oil from wool after combing.