The term "exclusive weapon" is not a commonly used phrase, but it could potentially refer to a single type or style of weapon that is specifically designed for use by a particular group or individual. This exclusive weapon may be chosen because it best suits the needs and preferences of the person using it, or because it has been customized in some way to enhance its effectiveness. In this sense, "exclusive" means unique or special, indicating that this is a weapon that stands out from others due to its particular characteristics or purpose.