weapon

noun

1. An instrument of attack or defense in combat or hunting, e.g. most guns, missiles, or swords.“The club that is now mostly used for golf was once a common weapon.”
2. An instrument or other means of harming or exerting control over another.“Money is the main weapon of modern oligarchs.”
3. A tool of any kind.“Choose your weapon.”
4. An idiot, an oaf, a fool, a tool; a contemptible or incompetent person.