"blackout bag" meaning in English

{
  "forms": [
    {
      "form": "blackout bags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blackout bag (plural blackout bags)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "89 11",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A bag made of dark material that prevents the entrance of light, for example to immerse a human subject's head in darkness, or to protect photographic film."
      ],
      "id": "en-blackout_bag-en-noun-W2Wivz1E"
    },
    {
      "examples": [
        {
          "text": "Coordinate term: bug-out bag"
        }
      ],
      "glosses": [
        "A portable kit containing items needed for power blackout survival."
      ],
      "id": "en-blackout_bag-en-noun-LkGvxa0h",
      "links": [
        [
          "portable",
          "portable"
        ],
        [
          "kit",
          "kit"
        ],
        [
          "survival",
          "survival"
        ]
      ]
    }
  ],
  "word": "blackout bag"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "blackout bags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blackout bag (plural blackout bags)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A bag made of dark material that prevents the entrance of light, for example to immerse a human subject's head in darkness, or to protect photographic film."
      ]
    },
    {
      "examples": [
        {
          "text": "Coordinate term: bug-out bag"
        }
      ],
      "glosses": [
        "A portable kit containing items needed for power blackout survival."
      ],
      "links": [
        [
          "portable",
          "portable"
        ],
        [
          "kit",
          "kit"
        ],
        [
          "survival",
          "survival"
        ]
      ]
    }
  ],
  "word": "blackout bag"
}