smoking gunglossary / SMOKING GUN smoking gun. A piece of physical or documentary evidence that conclusively impeaches an adversary on an outcome-determinative issue or destroys the adversary’s credibility. 词条贡献者 译者Christina,毕业于世界顶级翻译学院,擅长翻译各种与反垄断与不正当竞争诉讼相关的法律文件。