"span roof" meaning in English

{
  "forms": [
    {
      "form": "span roofs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "span roof (plural span roofs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1805, William Humphrey Marshall, The Rural Economy of the West of England:",
          "text": "Sometimes these linhays are double: the same span roof furnishing two ranges of sheds",
          "type": "quote"
        }
      ],
      "glosses": [
        "A common roof, having two slopes and one ridge, with eaves on both sides."
      ],
      "id": "en-span_roof-en-noun-KKz67QSv",
      "links": [
        [
          "roof",
          "roof"
        ],
        [
          "slope",
          "slope"
        ],
        [
          "ridge",
          "ridge"
        ],
        [
          "eaves",
          "eaves"
        ]
      ]
    }
  ],
  "word": "span roof"
}

{
  "forms": [
    {
      "form": "span roofs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "span roof (plural span roofs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1805, William Humphrey Marshall, The Rural Economy of the West of England:",
          "text": "Sometimes these linhays are double: the same span roof furnishing two ranges of sheds",
          "type": "quote"
        }
      ],
      "glosses": [
        "A common roof, having two slopes and one ridge, with eaves on both sides."
      ],
      "links": [
        [
          "roof",
          "roof"
        ],
        [
          "slope",
          "slope"
        ],
        [
          "ridge",
          "ridge"
        ],
        [
          "eaves",
          "eaves"
        ]
      ]
    }
  ],
  "word": "span roof"
}