downwash

English

Etymology

From down- +‎ wash

Noun

downwash (plural downwashes)

  1. downward air turbulence caused by a propeller or jet, but especially by helicopter blades
  2. The downward motion of air as a result of eddies behind a wing or chimney, etc.
    • 2008, John S. Denker, How It Flies
      There is significant upwash ahead of the wing and even more downwash behind the wing.

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