"big light" meaning in English

{
  "forms": [
    {
      "form": "the big light",
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        "canonical"
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  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun",
        "head": "the big light"
      },
      "expansion": "the big light",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Light sources",
          "orig": "en:Light sources",
          "parents": [
            "Light",
            "Energy",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Who put the big light on? It's like Blackpool Illuminations in here!",
          "type": "example"
        }
      ],
      "glosses": [
        "The main, usually central, light of a room in a house."
      ],
      "id": "en-big_light-en-noun-5se~q1xH",
      "raw_glosses": [
        "(UK, informal) The main, usually central, light of a room in a house."
      ],
      "tags": [
        "UK",
        "informal"
      ]
    }
  ],
  "word": "big light"
}

{
  "forms": [
    {
      "form": "the big light",
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    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun",
        "head": "the big light"
      },
      "expansion": "the big light",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English informal terms",
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        "en:Light sources"
      ],
      "examples": [
        {
          "text": "Who put the big light on? It's like Blackpool Illuminations in here!",
          "type": "example"
        }
      ],
      "glosses": [
        "The main, usually central, light of a room in a house."
      ],
      "raw_glosses": [
        "(UK, informal) The main, usually central, light of a room in a house."
      ],
      "tags": [
        "UK",
        "informal"
      ]
    }
  ],
  "word": "big light"
}