"amber alert" meaning in English

{
  "etymology_text": "After Amber Hagerman (1986–1996), a girl who was abducted and killed in Arlington, Texas. The upper-case spelling indicates a backronym: America's Missing: Broadcasting Emergency Response.",
  "forms": [
    {
      "form": "amber alerts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "amber alert (plural amber alerts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Portuguese translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Law enforcement",
          "orig": "en:Law enforcement",
          "parents": [
            "Crime prevention",
            "Emergency services",
            "Law",
            "Crime",
            "Public safety",
            "Justice",
            "Criminal law",
            "Society",
            "Public administration",
            "Security",
            "All topics",
            "Government",
            "Fundamental",
            "Politics"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A public notification of a child abduction."
      ],
      "id": "en-amber_alert-en-noun-ijLuFIBV",
      "links": [
        [
          "public",
          "public"
        ],
        [
          "notification",
          "notification"
        ],
        [
          "child",
          "child"
        ],
        [
          "abduction",
          "abduction"
        ]
      ],
      "raw_glosses": [
        "(US, Canada) A public notification of a child abduction."
      ],
      "synonyms": [
        {
          "word": "AMBER alert"
        },
        {
          "word": "AMBER Alert"
        }
      ],
      "tags": [
        "Canada",
        "US"
      ],
      "translations": [
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "public notification of a child abduction",
          "tags": [
            "masculine"
          ],
          "word": "alerta AMBER"
        }
      ],
      "wikipedia": [
        "Amber Hagerman",
        "amber alert"
      ]
    }
  ],
  "word": "amber alert"
}

{
  "etymology_text": "After Amber Hagerman (1986–1996), a girl who was abducted and killed in Arlington, Texas. The upper-case spelling indicates a backronym: America's Missing: Broadcasting Emergency Response.",
  "forms": [
    {
      "form": "amber alerts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "amber alert (plural amber alerts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "Canadian English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Portuguese translations",
        "en:Law enforcement"
      ],
      "glosses": [
        "A public notification of a child abduction."
      ],
      "links": [
        [
          "public",
          "public"
        ],
        [
          "notification",
          "notification"
        ],
        [
          "child",
          "child"
        ],
        [
          "abduction",
          "abduction"
        ]
      ],
      "raw_glosses": [
        "(US, Canada) A public notification of a child abduction."
      ],
      "tags": [
        "Canada",
        "US"
      ],
      "wikipedia": [
        "Amber Hagerman",
        "amber alert"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "AMBER alert"
    },
    {
      "word": "AMBER Alert"
    }
  ],
  "translations": [
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "public notification of a child abduction",
      "tags": [
        "masculine"
      ],
      "word": "alerta AMBER"
    }
  ],
  "word": "amber alert"
}