"migration" meaning in English

{
  "forms": [
    {
      "form": "migration",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "migrations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "hyphenation": "mi‧gra‧tion",
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "text": "Every fall, the birds begin their migration from the cold northern areas to the southern regions where they will spend the winter."
        }
      ],
      "glosses": [
        "A migration is a large movement, usually of people or animals, to a new living place."
      ],
      "id": "simple-migration-en-noun-jbOm8uno",
      "raw_tags": [
        "countable & uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/maɪgˈreɪʃǝn/",
      "tags": [
        "UK"
      ]
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-migration.wav",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "migration"
}

{
  "forms": [
    {
      "form": "migration",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "migrations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "hyphenation": "mi‧gra‧tion",
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Countable nouns",
        "Uncountable nouns"
      ],
      "examples": [
        {
          "text": "Every fall, the birds begin their migration from the cold northern areas to the southern regions where they will spend the winter."
        }
      ],
      "glosses": [
        "A migration is a large movement, usually of people or animals, to a new living place."
      ],
      "raw_tags": [
        "countable & uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/maɪgˈreɪʃǝn/",
      "tags": [
        "UK"
      ]
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-migration.wav",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "migration"
}