noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   downward air turbulence caused by a propeller or jet, but especially by helicopter blades
2. 2
   The downward motion of air as a result of eddies behind a wing or chimney, etc.

   "There is significant upwash ahead of the wing and even more downwash behind the wing."

Antonyms

All antonyms

upwash

Example

More examples

"There is significant upwash ahead of the wing and even more downwash behind the wing."

Etymology

From down- + wash.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.