"floor space" meaning in English

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      "expansion": "floor space (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "floorspace"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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      "examples": [
        {
          "ref": "1941 October, “Notes and News: Great Western Parcels Railcar”, in Railway Magazine, page 474",
          "text": "The semi-streamlined contour of the earlier G.W.R. railcars has been given up in favour of a more utilitarian blunt-nose end, and effective floor space gained thereby. A revenue-earning floor space of about 450 sq. ft. is provided, sufficient for about 10 tons of parcels.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of floorspace"
      ],
      "id": "en-floor_space-en-noun-ODCdQmLF",
      "links": [
        [
          "floorspace",
          "floorspace#English"
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      "tags": [
        "alt-of",
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  ],
  "word": "floor space"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "floor space (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "floorspace"
        }
      ],
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        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns"
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      "examples": [
        {
          "ref": "1941 October, “Notes and News: Great Western Parcels Railcar”, in Railway Magazine, page 474",
          "text": "The semi-streamlined contour of the earlier G.W.R. railcars has been given up in favour of a more utilitarian blunt-nose end, and effective floor space gained thereby. A revenue-earning floor space of about 450 sq. ft. is provided, sufficient for about 10 tons of parcels.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of floorspace"
      ],
      "links": [
        [
          "floorspace",
          "floorspace#English"
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    }
  ],
  "word": "floor space"
}