quench

[kwench]
verb (used with object)
1.
to slake, satisfy, or allay (thirst, desires, passion, etc.).
2.
to put out or extinguish (fire, flames, etc.).
3.
to cool suddenly by plunging into a liquid, as in tempering steel by immersion in water.
4.
to subdue or destroy; overcome; quell: to quench an uprising.
5.
Electronics. to terminate (the flow of electrons in a vacuum tube) by application of a voltage.

Origin:
1150–1200; Middle English quenchen, earlier cwenken; compare Old English -cwencan in ācwencan to quench (cf. a-3)

quenchable, adjective
quenchableness, noun
quencher, noun
unquenchable, adjective
unquenched, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
quench (kwɛntʃ)
 
vb
1.  to satisfy (one's thirst, desires, etc); slake
2.  to put out (a fire, flame, etc); extinguish
3.  to put down or quell; suppress: to quench a rebellion
4.  to cool (hot metal) by plunging it into cold water
5.  physics to reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
6.  electronics
 a.  to suppress (sparking) when the current is cut off in an inductive circuit
 b.  to suppress (an oscillation or discharge) in a component or device
 
[Old English ācwencan to extinguish; related to Old Frisian quinka to vanish]
 
'quenchable
 
adj
 
'quencher
 
n
 
'quenchless
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

quench
O.E. acwencan "to quench" (of fire, light), from P.Gmc. *cwandjan, probably a causative form of root of O.E. cwincan "to go out, be extinguished," O.Fris. kwinka.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
But the ten boatloads of water are costly and will quench the city's thirst for
  only a few months.
Someday, it could quench the semiconductor industry's thirst for ever-shrinking
  components.
These permanent pools of life-giving water quench the thirst of leopards,
  ostriches, and gazelles.
Nor has it done much to quench their thirst for revenge.
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