"flying arch" meaning in English

{
  "forms": [
    {
      "form": "flying arches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "es"
      },
      "expansion": "flying arch (plural flying arches)",
      "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": "1939 November, “Pertinent Paragraphs”, in Railway Magazine, page 358, photo caption:",
          "text": "Masonry flying arches strutting the retaining walls in Chorley cutting, Manchester-Blackpool line, L.M.S.R.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A form of arch that does not carry any vertical load, but is provided solely to supply outward horizontal forces, to resist an inwards compression. They are used across cuttings, to avoid them collapsing inwards."
      ],
      "id": "en-flying_arch-en-noun-hPiobogp"
    }
  ],
  "word": "flying arch"
}

{
  "forms": [
    {
      "form": "flying arches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "es"
      },
      "expansion": "flying arch (plural flying arches)",
      "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": "1939 November, “Pertinent Paragraphs”, in Railway Magazine, page 358, photo caption:",
          "text": "Masonry flying arches strutting the retaining walls in Chorley cutting, Manchester-Blackpool line, L.M.S.R.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A form of arch that does not carry any vertical load, but is provided solely to supply outward horizontal forces, to resist an inwards compression. They are used across cuttings, to avoid them collapsing inwards."
      ]
    }
  ],
  "word": "flying arch"
}