"smoking gun" meaning in All languages combined

{
  "categories": [
    {
      "kind": "other",
      "name": "英語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語_成句",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語_成句_名詞句",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "examples": [
        {
          "ref": "We have a theory, but we haven't found a smoking gun yet.",
          "text": "我々はある理論を定立した、しかしながら、それを証拠立てるものはまだない。"
        }
      ],
      "glosses": [
        "証拠"
      ],
      "id": "ja-smoking_gun-en-phrase-qN6LHHx0"
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "smoking gun"
}

{
  "categories": [
    "英語",
    "英語_成句",
    "英語_成句_名詞句"
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "examples": [
        {
          "ref": "We have a theory, but we haven't found a smoking gun yet.",
          "text": "我々はある理論を定立した、しかしながら、それを証拠立てるものはまだない。"
        }
      ],
      "glosses": [
        "証拠"
      ]
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "smoking gun"
}