"vrátník" meaning in Czech

{
  "etymology_templates": [
    {
      "args": {
        "1": "cs",
        "2": "vrata",
        "3": "-ník"
      },
      "expansion": "vrata + -ník",
      "name": "af"
    }
  ],
  "etymology_text": "From vrata + -ník.",
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "vrátník m inan",
      "name": "cs-noun"
    }
  ],
  "lang": "Czech",
  "lang_code": "cs",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Czech entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Czech terms suffixed with -ník",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "cs",
          "name": "Anatomy",
          "orig": "cs:Anatomy",
          "parents": [
            "Biology",
            "Medicine",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "pylorus (opening between the stomach and duodenum)"
      ],
      "id": "en-vrátník-cs-noun-Hh1apI2a",
      "links": [
        [
          "pylorus",
          "pylorus"
        ]
      ],
      "tags": [
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈvraːtɲiːk]"
    }
  ],
  "word": "vrátník"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cs",
        "2": "vrata",
        "3": "-ník"
      },
      "expansion": "vrata + -ník",
      "name": "af"
    }
  ],
  "etymology_text": "From vrata + -ník.",
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "vrátník m inan",
      "name": "cs-noun"
    }
  ],
  "lang": "Czech",
  "lang_code": "cs",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Czech entries with incorrect language header",
        "Czech inanimate nouns",
        "Czech lemmas",
        "Czech masculine nouns",
        "Czech nouns",
        "Czech terms suffixed with -ník",
        "Czech terms with IPA pronunciation",
        "cs:Anatomy"
      ],
      "glosses": [
        "pylorus (opening between the stomach and duodenum)"
      ],
      "links": [
        [
          "pylorus",
          "pylorus"
        ]
      ],
      "tags": [
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈvraːtɲiːk]"
    }
  ],
  "word": "vrátník"
}