"catastrophic moult" meaning in English

{
  "forms": [
    {
      "form": "catastrophic moults",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "catastrophic moult (plural catastrophic moults)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Ornithology",
          "orig": "en:Ornithology",
          "parents": [
            "Zoology",
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
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          "_dis": "66 34",
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          "name": "English entries with incorrect language header",
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          "source": "w+disamb"
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        {
          "_dis": "68 32",
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          "parents": [],
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        },
        {
          "_dis": "73 27",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A moult, typically in penguins, in which most or all of the feathers are shed at the same time"
      ],
      "id": "en-catastrophic_moult-en-noun-A5mgS-W7",
      "links": [
        [
          "ornithology",
          "ornithology"
        ],
        [
          "moult",
          "moult"
        ],
        [
          "penguin",
          "penguin"
        ],
        [
          "feather",
          "feather"
        ]
      ],
      "raw_glosses": [
        "(ornithology) A moult, typically in penguins, in which most or all of the feathers are shed at the same time"
      ],
      "synonyms": [
        {
          "_dis1": "95 5",
          "tags": [
            "US"
          ],
          "word": "catastrophic molt:"
        }
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "ornithology"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Zoology",
          "orig": "en:Zoology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A similar process in some seals in which large areas of skin are lost"
      ],
      "id": "en-catastrophic_moult-en-noun-suGyLPUB",
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "seal",
          "seal"
        ],
        [
          "skin",
          "skin"
        ]
      ],
      "raw_glosses": [
        "(zoology) A similar process in some seals in which large areas of skin are lost"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "catastrophic moult"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "catastrophic moults",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "catastrophic moult (plural catastrophic moults)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Ornithology"
      ],
      "glosses": [
        "A moult, typically in penguins, in which most or all of the feathers are shed at the same time"
      ],
      "links": [
        [
          "ornithology",
          "ornithology"
        ],
        [
          "moult",
          "moult"
        ],
        [
          "penguin",
          "penguin"
        ],
        [
          "feather",
          "feather"
        ]
      ],
      "raw_glosses": [
        "(ornithology) A moult, typically in penguins, in which most or all of the feathers are shed at the same time"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "ornithology"
      ]
    },
    {
      "categories": [
        "en:Zoology"
      ],
      "glosses": [
        "A similar process in some seals in which large areas of skin are lost"
      ],
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "seal",
          "seal"
        ],
        [
          "skin",
          "skin"
        ]
      ],
      "raw_glosses": [
        "(zoology) A similar process in some seals in which large areas of skin are lost"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "US"
      ],
      "word": "catastrophic molt:"
    }
  ],
  "word": "catastrophic moult"
}