/ twiːk; NAmE / verb , noun
■ verb [ vn ]
1.
to pull or twist sth suddenly :
She tweaked his ear playfully.
2.
to make slight changes to a machine, system, etc. to improve it :
I think you'll have to tweak these figures a little before you show them to the boss.
■ noun
1.
a sharp pull or twist :
She gave his ear a tweak.
2.
a slight change that you make to a machine, system, etc. to improve it
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WORD ORIGIN
early 17th cent.: probably an alteration of dialect twick pull sharply ; related to twitch .