"roll cumulus" meaning in English

{
  "forms": [
    {
      "form": "roll cumuli",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "roll cumuli"
      },
      "expansion": "roll cumulus (plural roll cumuli)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Meteorology",
          "orig": "en:Meteorology",
          "parents": [
            "Atmosphere",
            "Earth sciences",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A form of stratocumulus with parallel lines of dense cloud."
      ],
      "id": "en-roll_cumulus-en-noun-QeBIBZf0",
      "links": [
        [
          "meteorology",
          "meteorology"
        ],
        [
          "stratocumulus",
          "stratocumulus"
        ],
        [
          "parallel",
          "parallel"
        ],
        [
          "line",
          "line"
        ],
        [
          "dense",
          "dense"
        ],
        [
          "cloud",
          "cloud"
        ]
      ],
      "raw_glosses": [
        "(meteorology) A form of stratocumulus with parallel lines of dense cloud."
      ],
      "topics": [
        "climatology",
        "meteorology",
        "natural-sciences"
      ]
    }
  ],
  "word": "roll cumulus"
}

{
  "forms": [
    {
      "form": "roll cumuli",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "roll cumuli"
      },
      "expansion": "roll cumulus (plural roll cumuli)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Meteorology"
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      "glosses": [
        "A form of stratocumulus with parallel lines of dense cloud."
      ],
      "links": [
        [
          "meteorology",
          "meteorology"
        ],
        [
          "stratocumulus",
          "stratocumulus"
        ],
        [
          "parallel",
          "parallel"
        ],
        [
          "line",
          "line"
        ],
        [
          "dense",
          "dense"
        ],
        [
          "cloud",
          "cloud"
        ]
      ],
      "raw_glosses": [
        "(meteorology) A form of stratocumulus with parallel lines of dense cloud."
      ],
      "topics": [
        "climatology",
        "meteorology",
        "natural-sciences"
      ]
    }
  ],
  "word": "roll cumulus"
}