1. a small adjustment or modification
2. a sharp pinch or twist

1. to make small adjustments or improvements to something
2. to pinch and twist or pull sharply

Examples

• She tweaks the recipe every time she makes it.
• The programmer tweaks the code to improve performance.
• He tweaks his brother’s ear playfully.
• The coach made a few tweaks to the game plan.
• Just a small tweak to the design made it perfect.
• The mechanic tweaks the engine settings.
• Her grandmother tweaks her cheek affectionately.