"backwash" in the noun sense
1. slipstream, airstream, race, backwash, wash
the flow of air that is driven backwards by an aircraft propeller
2. aftermath, wake, backwash
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"
3. wake, backwash
the wave that spreads behind a boat as it moves forward
"the motorboat's wake capsized the canoe"
Source: WordNet® (An amazing lexical database of English)
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