blunderbuss
/ˈblʌndəbʌs/noun
1- historical a short large-bored gun firing balls or slugs〈史〉大口径前膛枪。
1.1
- figurative an action or way of doing something regarded as lacking in subtlety and precision〈喻〉缺少高明手法（或缜密思考）的行为; 大大咧咧（或粗枝大叶）的行为：
economists resort too quickly to the blunderbuss of regulation.
经济学家们迫不及待地利用管理上的粗疏作风来做文章。
词源
mid 17th cent.: alteration （by association with BLUNDER） of Dutch donderbus, literally 'thunder gun'.