What is W in Binance?

Could you please explain what "W" stands for in the context of Binance? I've been hearing this term frequently but haven't quite grasped its significance yet. Could you also elaborate on its role and importance in Binance's operations or platform? It would be helpful if you could provide a concise yet informative answer, as I'm keen to understand this aspect of cryptocurrency trading better. Thank you in advance for your assistance.