backwash in WordNet English dictionary

1. 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"
   aftermath  wake  backwash 
   
2. the flow of air that is driven backwards by an aircraft propeller
   slipstream  airstream  race  backwash  wash 
   
3. the wave that spreads behind a boat as it moves forward
   "the motorboat's wake capsized the canoe"
   wake  backwash