"cycloidal arch" meaning in English

{
  "forms": [
    {
      "form": "cycloidal arches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cycloidal arch (plural cycloidal arches)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
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        {
          "kind": "other",
          "langcode": "en",
          "name": "Architecture",
          "orig": "en:Architecture",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Curves",
          "orig": "en:Curves",
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        }
      ],
      "glosses": [
        "An arch that has a cycloidal shape, wherein the span of the arch is some factor of pi*rise."
      ],
      "id": "en-cycloidal_arch-en-noun-IcLFSlnw",
      "links": [
        [
          "architecture",
          "architecture"
        ]
      ],
      "raw_glosses": [
        "(architecture) An arch that has a cycloidal shape, wherein the span of the arch is some factor of pi*rise."
      ],
      "topics": [
        "architecture"
      ]
    }
  ],
  "word": "cycloidal arch"
}

{
  "forms": [
    {
      "form": "cycloidal arches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cycloidal arch (plural cycloidal arches)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Architecture",
        "en:Curves"
      ],
      "glosses": [
        "An arch that has a cycloidal shape, wherein the span of the arch is some factor of pi*rise."
      ],
      "links": [
        [
          "architecture",
          "architecture"
        ]
      ],
      "raw_glosses": [
        "(architecture) An arch that has a cycloidal shape, wherein the span of the arch is some factor of pi*rise."
      ],
      "topics": [
        "architecture"
      ]
    }
  ],
  "word": "cycloidal arch"
}