tweaks

tweak

[tweek]
verb (used with object)
1.
to pinch and pull with a jerk and twist: to tweak someone's ear; to tweak someone's nose.
2.
to pull or pinch the nose of, especially gently: He tweaked the baby on greeting.
3.
to make a minor adjustment to: to tweak a computer program.
noun
4.
an act or instance of tweaking; a sharp, twisting pull or jerk.

Origin:
1595–1605; akin to twitch

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
tweak (twiːk)
 
vb
1.  to twist, jerk, or pinch with a sharp or sudden movement: to tweak someone's nose
2.  slang motor racing to tune (a car or engine) for peak performance
3.  informal to make a minor alteration
 
n
4.  an instance of tweaking
5.  informal a minor alteration
 
[Old English twiccian; related to Old High German zwecchōn; see twitch]
 
'tweaky
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

tweak
probably from O.E. twiccian "to pluck," of obscure origin; perhaps related to twitch. Meaning "to make fine adjustments" is attested from 1966.
Online Etymology Dictionary, © 2010 Douglas Harper
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