An idiot, an oaf, a fool, a tool; a contemptible or incompetent person.
An instrument of attack or defense in combat or hunting, e.g. most guns, missiles, or swords; arm.
An instrument or other means of harming or exerting control over another.
A tool of any kind.
A very skilled, competent, or capable person or thing worthy of awe.
To equip with a weapon; to arm.