"double barrel vault" meaning in English

{
  "forms": [
    {
      "form": "double barrel vaults",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "double barrel vault (plural double barrel vaults)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Architecture",
          "orig": "en:Architecture",
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        }
      ],
      "glosses": [
        "A vault resulting from the intersection of two barrel-vaults crossing in a right angle. Its thrusts are concentrated along the groins or arrises and eventually at the four corners"
      ],
      "id": "en-double_barrel_vault-en-noun-FZ~G2OJQ",
      "links": [
        [
          "architecture",
          "architecture"
        ],
        [
          "vault",
          "vault"
        ],
        [
          "groin",
          "groin"
        ],
        [
          "arris",
          "arris"
        ]
      ],
      "raw_glosses": [
        "(architecture) A vault resulting from the intersection of two barrel-vaults crossing in a right angle. Its thrusts are concentrated along the groins or arrises and eventually at the four corners"
      ],
      "synonyms": [
        {
          "word": "groin vault"
        },
        {
          "word": "groined vault"
        },
        {
          "word": "cross vault"
        }
      ],
      "topics": [
        "architecture"
      ]
    }
  ],
  "word": "double barrel vault"
}

{
  "forms": [
    {
      "form": "double barrel vaults",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "double barrel vault (plural double barrel vaults)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "A vault resulting from the intersection of two barrel-vaults crossing in a right angle. Its thrusts are concentrated along the groins or arrises and eventually at the four corners"
      ],
      "links": [
        [
          "architecture",
          "architecture"
        ],
        [
          "vault",
          "vault"
        ],
        [
          "groin",
          "groin"
        ],
        [
          "arris",
          "arris"
        ]
      ],
      "raw_glosses": [
        "(architecture) A vault resulting from the intersection of two barrel-vaults crossing in a right angle. Its thrusts are concentrated along the groins or arrises and eventually at the four corners"
      ],
      "topics": [
        "architecture"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "groin vault"
    },
    {
      "word": "groined vault"
    },
    {
      "word": "cross vault"
    }
  ],
  "word": "double barrel vault"
}