prop wash

/P R AA1 P W AA0 SH/
noun
  1. 1

    The disturbed mass of air or water pushed aft (or fore when in reverse) by the propeller of an aircraft or propeller-driven watercraft.

  2. 2

    Byproduct of thrust produced by a propeller.

  3. 3

    In military or other social organizations involving aircraft or boats, a mythical substance supposedly used to wash propellers.

    โ€œWe sent the new recruit to obtain a bucket of prop wash.โ€

Source: https://en.wiktionary.org/wiki/prop%20wash