backwash

n. backflow of water; aftereffect, result

The word Backwash might refer to:Backwash (geography), the water that rolls back down a beach after a wave has brokenBackwash (physical phenomenon), the backwards flow of air or waterBackwash, the process of thoroughly cleaning a pool filter pump by reversing the flow of water through it with the dirt and rinse water going to waste. See also: BackwashingBackwash (The Wire episode), an episode of the HBO television series The WireBackwash (album), a retrospective compilation by the group Talulah GoshBackwash (saliva), the slang term for saliva or food particles that have flowed back into a drink
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Noun
1. the flow of air that is driven backwards by an aircraft propeller
(synonym) slipstream, airstream, race, wash
(hypernym) flow
2. the consequences of an event (especially a catastrophic event); "the aftermath of war"; "in the wake of the accident no one knew how many had been injured"
(synonym) aftermath, wake
(hypernym) consequence, effect, outcome, result, event, issue, upshot
3. the wave that spreads behind a boat as it moves forward; "the motorboat's wake capsized the canoe"
(synonym) wake
(hypernym) wave, moving ridge

(v. i.)
To clean the oil from (wood) after combing.
  

Water that returns into an ocean or large lake after hitting the shore as swash.