"swanmark" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "swan",
        "3": "mark"
      },
      "expansion": "swan + mark",
      "name": "compound"
    }
  ],
  "etymology_text": "swan + mark",
  "forms": [
    {
      "form": "swanmarks",
      "tags": [
        "plural"
      ]
    }
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  "head_templates": [
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      "args": {},
      "expansion": "swanmark (plural swanmarks)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
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        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Swans",
          "orig": "en:Swans",
          "parents": [
            "Anatids",
            "Freshwater birds",
            "Birds",
            "Vertebrates",
            "Chordates",
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            "All topics",
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          "source": "w"
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      "examples": [
        {
          "ref": "1718, The Game Law",
          "text": "None may have a Swanmark, unless it be by Grant of the King",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A mark of ownership cut on the bill of a swan."
      ],
      "id": "en-swanmark-en-noun-zkAbGjMY",
      "links": [
        [
          "mark",
          "mark"
        ],
        [
          "ownership",
          "ownership"
        ],
        [
          "bill",
          "bill"
        ],
        [
          "swan",
          "swan"
        ]
      ],
      "raw_glosses": [
        "(UK) A mark of ownership cut on the bill of a swan."
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "swanmark"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "swan",
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      "expansion": "swan + mark",
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    }
  ],
  "etymology_text": "swan + mark",
  "forms": [
    {
      "form": "swanmarks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "swanmark (plural swanmarks)",
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  "lang_code": "en",
  "pos": "noun",
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        {
          "ref": "1718, The Game Law",
          "text": "None may have a Swanmark, unless it be by Grant of the King",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A mark of ownership cut on the bill of a swan."
      ],
      "links": [
        [
          "mark",
          "mark"
        ],
        [
          "ownership",
          "ownership"
        ],
        [
          "bill",
          "bill"
        ],
        [
          "swan",
          "swan"
        ]
      ],
      "raw_glosses": [
        "(UK) A mark of ownership cut on the bill of a swan."
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "swanmark"
}