Nautical. water thrown backward by the motion of oars, propellers, paddle wheels, etc.
the portion of the wash
of an aircraft that flows to the rear, usually created by the power plant. Compare wash ( def 31 )
a condition, usually undesirable, that continues long after the event which
verb (used with object)
to affect, as by hitting, rocking, or splashing, with a backwash: a powerful cutter backwashing the skiers.
to clean out (a clogged filter) by reversing the flow of fluid: Backwash the swimming pool's filters regularly.
3. aftermath, consequence, result, upshot.