To tweak is to twist sharply, or to make small adjustments to something in order to improve it.(verb)
The definition of a tweak is a small adjustment made to something in order to improve it.(noun)
A small adjustment made to the engine of a car to make it run better is an example of a tweak.
See tweak in Webster's New World College Dictionary
Origin: var. of dial. twick < ME twikken < OE twiccan, to twitch
See tweak in American Heritage Dictionary 4
transitive verb tweaked, tweak·ing, tweaks
Origin: Probably variant of dialectal twick
Origin: , from Middle English twikken
Origin: , from Old English twiccian.
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