Definition of Backwash
Backwash
back·wash
Definition/Meaning
(noun)
A flow of water or other liquid returning to its source.
e.g. The backwash from the storm surge flooded the coastal town.
(noun)
a backward movement, current, or flow of water or air, usually caused by some force such as an object moving through it, for example the receding of ocean waves;
e.g. The backwash of the speeding car raised up dust.
(noun)
(informal American) the liquid that flows back into a container after a person takes a sip from it, considered to contain the person's saliva;
e.g. He hates sharing drinks with people because he thinks backwash is disgusting.
(verb)
to reverse the direction of a fluid's flow through a filter in order to clean the filter;
e.g. He plans to backwash the pool filters this weekend.
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