1. to reverse the situation; to make the opposite happen

1. Other team was beating us badly, but then we turned the tables on them and won!

2. I went to Jane’s house to help get ready for a surprise party for Bob. It turned out that the surprise party was for me! Jane really turned the tables on me!

3. Turning the tables like that requires a lot of planning and a lot of secrecy.

4. She turned the tables on her rival with allegations of corruption.