What is a pink moon?

Excuse me, could you please elaborate on the term "pink moon"? I've heard it mentioned in a few conversations recently and I'm curious about its significance. Is it a specific event related to astronomy, or is it perhaps a colloquial term for something else entirely? If it's an astronomical event, what causes the moon to appear pink, and how often does it occur? Additionally, are there any cultural or historical significances associated with the pink moon? I'd appreciate any insights you could offer on this intriguing topic.