"safelight" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "safe",
        "3": "light"
      },
      "expansion": "safe + light",
      "name": "compound"
    }
  ],
  "etymology_text": "safe + light",
  "forms": [
    {
      "form": "safelights",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "safelight (plural safelights)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w"
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        {
          "kind": "other",
          "name": "Mandarin terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Photography",
          "orig": "en:Photography",
          "parents": [
            "Art",
            "Human activity",
            "Media",
            "Culture",
            "Human behaviour",
            "Communication",
            "Society",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The lamp in a photographic darkroom."
      ],
      "id": "en-safelight-en-noun-yzDoglr4",
      "links": [
        [
          "lamp",
          "lamp"
        ],
        [
          "photographic",
          "photographic"
        ],
        [
          "darkroom",
          "darkroom"
        ]
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "lamp in a darkroom",
          "word": "安全燈"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "ānquándēng",
          "sense": "lamp in a darkroom",
          "word": "安全灯"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "lamp in a darkroom",
          "word": "suojavalo"
        }
      ],
      "wikipedia": [
        "safelight"
      ]
    }
  ],
  "word": "safelight"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "safe",
        "3": "light"
      },
      "expansion": "safe + light",
      "name": "compound"
    }
  ],
  "etymology_text": "safe + light",
  "forms": [
    {
      "form": "safelights",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "safelight (plural safelights)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Photography"
      ],
      "glosses": [
        "The lamp in a photographic darkroom."
      ],
      "links": [
        [
          "lamp",
          "lamp"
        ],
        [
          "photographic",
          "photographic"
        ],
        [
          "darkroom",
          "darkroom"
        ]
      ],
      "wikipedia": [
        "safelight"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "lamp in a darkroom",
      "word": "安全燈"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "ānquándēng",
      "sense": "lamp in a darkroom",
      "word": "安全灯"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "lamp in a darkroom",
      "word": "suojavalo"
    }
  ],
  "word": "safelight"
}