A weapon is any tool or device designed to inflict harm or damage on a target. Weapons can be used for various purposes, including self-defense, hunting, or military combat. They can range from simple items like knives and clubs to more complex systems like firearms and explosives. Weapons are often categorized into different types, such as melee weapons, which are used in close combat, and ranged weapons, which can strike targets from a distance. The development and use of weapons have played significant roles in human history, influencing conflicts, laws, and societal structures.