"dirty thunderstorm" meaning in English

{
  "forms": [
    {
      "form": "dirty thunderstorms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dirty thunderstorm (plural dirty thunderstorms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A weather phenomenon that is related to the production of lightning within a volcanic plume."
      ],
      "id": "en-dirty_thunderstorm-en-noun-6cM7F3Oa",
      "links": [
        [
          "weather",
          "weather"
        ],
        [
          "phenomenon",
          "phenomenon"
        ],
        [
          "lightning",
          "lightning"
        ]
      ],
      "synonyms": [
        {
          "word": "volcanic lightning"
        },
        {
          "word": "thunder volcano"
        }
      ],
      "translations": [
        {
          "code": "ka",
          "lang": "Georgian",
          "roman": "vulḳanuri elva",
          "sense": "weather phenomenon",
          "word": "ვულკანური ელვა"
        },
        {
          "alt": "かざんらい",
          "code": "ja",
          "lang": "Japanese",
          "roman": "kazanrai",
          "sense": "weather phenomenon",
          "word": "火山雷"
        }
      ],
      "wikipedia": [
        "Dirty thunderstorm"
      ]
    }
  ],
  "word": "dirty thunderstorm"
}

{
  "forms": [
    {
      "form": "dirty thunderstorms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dirty thunderstorm (plural dirty thunderstorms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Japanese terms with redundant script codes"
      ],
      "glosses": [
        "A weather phenomenon that is related to the production of lightning within a volcanic plume."
      ],
      "links": [
        [
          "weather",
          "weather"
        ],
        [
          "phenomenon",
          "phenomenon"
        ],
        [
          "lightning",
          "lightning"
        ]
      ],
      "wikipedia": [
        "Dirty thunderstorm"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "volcanic lightning"
    },
    {
      "word": "thunder volcano"
    }
  ],
  "translations": [
    {
      "code": "ka",
      "lang": "Georgian",
      "roman": "vulḳanuri elva",
      "sense": "weather phenomenon",
      "word": "ვულკანური ელვა"
    },
    {
      "alt": "かざんらい",
      "code": "ja",
      "lang": "Japanese",
      "roman": "kazanrai",
      "sense": "weather phenomenon",
      "word": "火山雷"
    }
  ],
  "word": "dirty thunderstorm"
}