"turncap" meaning in English

{
  "forms": [
    {
      "form": "turncaps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "turncap (plural turncaps)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1846, Morrill Wyman, A Practical Treatise on Ventilation",
          "text": "a building furnished with cowls, or turncaps, with their vanes so arranged, that, while one shall receive the full force of the wind, the other may allow it to escape freely",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A sort of chimney cap which turns round with the wind so as to present its opening to the leeward."
      ],
      "id": "en-turncap-en-noun-CpDleLDY",
      "links": [
        [
          "chimney",
          "chimney"
        ],
        [
          "cap",
          "cap"
        ],
        [
          "leeward",
          "leeward"
        ]
      ],
      "synonyms": [
        {
          "word": "turn cap"
        }
      ]
    }
  ],
  "word": "turncap"
}

{
  "forms": [
    {
      "form": "turncaps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "turncap (plural turncaps)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1846, Morrill Wyman, A Practical Treatise on Ventilation",
          "text": "a building furnished with cowls, or turncaps, with their vanes so arranged, that, while one shall receive the full force of the wind, the other may allow it to escape freely",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A sort of chimney cap which turns round with the wind so as to present its opening to the leeward."
      ],
      "links": [
        [
          "chimney",
          "chimney"
        ],
        [
          "cap",
          "cap"
        ],
        [
          "leeward",
          "leeward"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "turn cap"
    }
  ],
  "word": "turncap"
}