weapon

noun

1. 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. 2

   An instrument or other means of harming or exerting control over another.

   “Money is the main weapon of modern oligarchs.”

3. 3

   A tool of any kind.

   “Choose your weapon.”

4. 4

   An idiot, an oaf, a fool, a tool; a contemptible or incompetent person.