v.1. To retrieve and regain possession of something: I had to take back my jacket from your closet because I need to wear it. I took my book back because I forgot that I had written some notes in the margins. The store won't take back clothing if it has been worn.
2. To return something to some location: I took the book back to the library. The toaster I bought didn't work, so I had to take it back.
3. To cause someone to return in thought to a past time: That old song sure takes me back. The smell of the ocean takes me back to our first trip to the beach.
4. To retract something stated, written, or done: What a terrible thing to say—I demand that you take it back. After your bad behavior, I take back all the nice things I said about you. I wish I could take back my embarrassing performance.