1. noun A team of two wrestlers who take turns competing against an opposing pair of wrestlers. The two teammates touch hands when one player leaves the ring, so that the other can "tag in." A tag team is only as strong as its weakest member.

2. noun Two people working in cooperation. Now that we're a tag team, I think we'll get through this project a lot faster.

3. verb To work in cooperation with another person. Let's tag team to get this project done.