: to change (something) slightly in order to improve it : to make small adjustments to (something)
: to injure (a part of your body) slightly
: to pinch and pull (something) with a sudden movement
What made you want to look up tweak? Please tell us where you read or heard it (including the quote, if possible).
Take Our 10-Question Quiz
The commonly misspelled words quiz
How strong is your vocabulary?
The Vocab Quiz Game for iPhone & iPad
"Incredibly fun and addictive. And informative!" User Review, iTunes