"dark cloud" meaning in English

{
  "forms": [
    {
      "form": "dark clouds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dark cloud (plural dark clouds)",
      "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": "topical",
          "langcode": "en",
          "name": "Sadness",
          "orig": "en:Sadness",
          "parents": [
            "Emotions",
            "Mind",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2024 February 7, Philip Haigh, “Railway's fragile resilience”, in RAIL, number 1002, page 3",
          "text": "Strikes remain the other dark cloud hanging over the railway.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A situation or future event that causes worry, problems or unhappiness, likened to such a cloud overhead in the sky."
      ],
      "id": "en-dark_cloud-en-noun-~nTMODNx",
      "raw_glosses": [
        "(idiomatic) A situation or future event that causes worry, problems or unhappiness, likened to such a cloud overhead in the sky."
      ],
      "related": [
        {
          "word": "every dark cloud has a silver lining"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "dark cloud"
}

{
  "forms": [
    {
      "form": "dark clouds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dark cloud (plural dark clouds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "every dark cloud has a silver lining"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "en:Sadness"
      ],
      "examples": [
        {
          "ref": "2024 February 7, Philip Haigh, “Railway's fragile resilience”, in RAIL, number 1002, page 3",
          "text": "Strikes remain the other dark cloud hanging over the railway.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A situation or future event that causes worry, problems or unhappiness, likened to such a cloud overhead in the sky."
      ],
      "raw_glosses": [
        "(idiomatic) A situation or future event that causes worry, problems or unhappiness, likened to such a cloud overhead in the sky."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "dark cloud"
}