What is what does it mean when a girl calls you buddy?

If a girl calls you "buddy" it generally means that she sees you as a friend and nothing more than that. The term "buddy" is often used in a friendly and colloquial way to refer to someone who you have a close platonic relationship with. It could also indicate that she is not interested in pursuing a romantic or intimate relationship with you. However, it’s important to understand that the context in which the word is used can be different for every girl and situation. So, it's best to understand the meaning behind it, by observing the tone and context of the conversation.