What does "win [someone] over" mean? Could you give me some examples?

Rebecca

To "win someone over" means to make someone on your side or to prefer/like you. For example, if you won someone over to your team, it means that you were able to convince them to join your side. Ex: I won my boss over through good performance at work. Ex: I won over the girl I liked by being nice to her and helping her with her studies.