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.