Backwash Definition

băkwŏsh, -wôsh
noun
A backward flow of water, as from the action of oars.
American Heritage
Water moved backward, as by a ship or an oar.
Webster's New World
A backward flow of air, as from the propeller of an aircraft.
American Heritage
A backward current or flow, as of air from an airplane propeller.
Webster's New World
A result of an event; an aftermath.
American Heritage
verb
To operate a water filter in the reverse direction in order to clean it.
Wiktionary

Other Word Forms of Backwash

Noun

Singular:
backwash
Plural:
backwashes

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Unscrambles

backwash