"miner's canary" meaning in English

{
  "derived": [
    {
      "_dis1": "0 0",
      "word": "climate canary"
    }
  ],
  "forms": [
    {
      "form": "miners' canaries",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "miner's canaries",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "miners' canaries",
        "2": "+"
      },
      "expansion": "miner's canary (plural miners' canaries or miner's canaries)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0",
      "word": "bioindicator"
    }
  ],
  "senses": [
    {
      "glosses": [
        "A bird caged in mines because its death provided a warning of dangerous levels of toxic gases."
      ],
      "id": "en-miner's_canary-en-noun-EMO3TtWG"
    },
    {
      "categories": [
        {
          "_dis": "10 90",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "13 87",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "7 93",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Anything, especially an organism, whose death or distress provides an early warning of danger."
      ],
      "id": "en-miner's_canary-en-noun-NUNxN78P",
      "raw_glosses": [
        "(idiomatic) Anything, especially an organism, whose death or distress provides an early warning of danger."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "word": "canary in a coal mine"
    },
    {
      "_dis1": "0 0",
      "word": "miners' canary"
    }
  ],
  "word": "miner's canary"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "derived": [
    {
      "word": "climate canary"
    }
  ],
  "forms": [
    {
      "form": "miners' canaries",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "miner's canaries",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "miners' canaries",
        "2": "+"
      },
      "expansion": "miner's canary (plural miners' canaries or miner's canaries)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "bioindicator"
    }
  ],
  "senses": [
    {
      "glosses": [
        "A bird caged in mines because its death provided a warning of dangerous levels of toxic gases."
      ]
    },
    {
      "categories": [
        "English idioms"
      ],
      "glosses": [
        "Anything, especially an organism, whose death or distress provides an early warning of danger."
      ],
      "raw_glosses": [
        "(idiomatic) Anything, especially an organism, whose death or distress provides an early warning of danger."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "canary in a coal mine"
    },
    {
      "word": "miners' canary"
    }
  ],
  "word": "miner's canary"
}