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backwash

[bak-wosh, -wawsh] /ˈbækˌwɒʃ, -ˌwɔʃ/
noun
1.
Nautical. water thrown backward by the motion of oars, propellers, paddle wheels, etc.
2.
Aeronautics. the portion of the wash of an aircraft that flows to the rear, usually created by the power plant.
Compare wash (def 31).
3.
a condition, usually undesirable, that continues long after the event which caused it.
verb (used with object)
4.
to affect, as by hitting, rocking, or splashing, with a backwash:
a powerful cutter backwashing the skiers.
5.
to clean out (a clogged filter) by reversing the flow of fluid:
Backwash the swimming pool's filters regularly.
Origin
1765-1775
1765-75; back2 + wash
Related forms
backwasher, noun
Synonyms
3. aftermath, consequence, result, upshot.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for backwash
  • And they do run a risk of letting ideology backwash into their technical judgment.
  • At that point, it would still be trapped in the backwash generated by the solar wind, and might someday be caught and carried off.
  • Our makeshift campsite was blown to tatters by the backwash of the furious blades.
  • Many have little mesh windscreens that pop up behind drivers to prevent a backwash of air.
  • Membrane biological reactor treatment of a saline backwash flow from a recirculating aquaculture system.
  • When you need to backwash your pool filter or drain the pool, try to use the water to irrigate landscaping.
  • backwash of the pressure filters is initiated when a predetermined pressure differential is reached.
  • Discharges of backwash water from water softening units.
  • Pre-piped internal backwash distributor and filtered water collector.
  • While relocating this pump, it is also recommended to provide additional support to the backwash piping.
British Dictionary definitions for backwash

backwash

/ˈbækˌwɒʃ/
noun
1.
a sucking movement of water, such as that of retreating waves Compare swash (sense 4)
2.
water washed backwards by the motion of oars or other propelling devices
3.
the backward flow of air set up by an aircraft's engines
4.
a condition resulting from a previous event; repercussion
verb
5.
(transitive) to remove oil from (combed wool)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for backwash
n.

1876, "motion of a receeding wave," from back (adj.) + wash (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for backwash

backwash

noun

Something drunk that is regurgitated or spit back out

verb

To regurgitate or spit back out liquid


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Word Value for backwash

22
23
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