"vena cava" meaning in Spanish

{
  "forms": [
    {
      "form": "venas cavas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "vena cava f (plural venas cavas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Anatomy",
          "orig": "es:Anatomy",
          "parents": [
            "Biology",
            "Medicine",
            "Sciences",
            "Healthcare",
            "All topics",
            "Health",
            "Fundamental",
            "Body"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "vena cava inferior"
        },
        {
          "word": "vena cava superior"
        }
      ],
      "glosses": [
        "vena cava"
      ],
      "id": "en-vena_cava-es-noun-PWiarJM7",
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "vena cava",
          "vena cava#English"
        ]
      ],
      "raw_glosses": [
        "(anatomy) vena cava"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "vena cava"
}

{
  "derived": [
    {
      "word": "vena cava inferior"
    },
    {
      "word": "vena cava superior"
    }
  ],
  "forms": [
    {
      "form": "venas cavas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "vena cava f (plural venas cavas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 3 entries",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish nouns",
        "es:Anatomy"
      ],
      "glosses": [
        "vena cava"
      ],
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "vena cava",
          "vena cava#English"
        ]
      ],
      "raw_glosses": [
        "(anatomy) vena cava"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "vena cava"
}