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Backwash

ˈbakwɒʃ

Backwash definitions
noun
backwash
  1. the motion of receding waves

    "the backwash is reduced in energy by the percolation of water into the shingle"

    • a backward current created by an object moving through water or air

      "the backwash of a truck on the autobahn"

    • the unpleasant after-effects of an event

      "the backwash of the Cuban missile crisis"

    • the liquid that flows back into a bottle, glass, etc. after someone has taken a drink, assumed to contain that person's saliva

      "Can you please stop drinking straight from the milk carton? I don't want your backwash!"

verb
backwash backwashed backwashes backwashing
  1. clean (a filter) by reversing the flow of fluid through it

    "the very fine mesh is backwashed to remove solids"