Tweak

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1 : to change (something) slightly in order to improve it : to make small adjustments to (something)

• The company may have to tweak[=adjust] its image.
• Our software developers are tweaking[=fine-tuning] the program.
• We just wanted to tweak his original idea a bit.

2 : to injure (a part of your body) slightly

• He tweaked his ankle playing soccer.

3 : to pinch and pull (something) with a sudden movement

• My brother hates it when our grandmother tweaks his cheek.

4 : to criticize or make fun of (someone or something)

• His friends tweaked[=teased] him for gaining weight.