兵器は英語で
weapon

英語の定義

weapon
1. n. 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. n. An instrument or other means of harming or exerting control over another.
Money is the main weapon of modern oligarchs.
3. n. (informal, humorous) A tool of any kind.
Choose your weapon.
4. n. (Scotland, Britain, slang) An idiot, an oaf, a fool, a tool; a contemptible or incompetent person.