TOUCH UP

v. 1. To paint over (small imperfections.) I want to touch up that scratch on the fender. The woodwork is done, but there are a few places he has to touch up. 2. To improve with small additions or changes. He touched up the photographic negative to make a sharper print. It's a good speech, but it needs a little touching up. 3. slang To talk into lending; wheedle from. He touched George up for five bucks.