"arctation" meaning in English

{
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    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "arctus",
        "4": "",
        "5": "shut in, narrow"
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      "expansion": "Latin arctus (“shut in, narrow”)",
      "name": "uder"
    },
    {
      "args": {
        "1": "fr",
        "2": "arctation"
      },
      "expansion": "French arctation",
      "name": "cog"
    }
  ],
  "etymology_text": "From Latin arctus (“shut in, narrow”), past participle of arcere (“to shut in”). Compare French arctation.",
  "forms": [
    {
      "form": "arctations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {
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      "expansion": "arctation (countable and uncountable, plural arctations)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [
            "Biology",
            "Healthcare",
            "Sciences",
            "Health",
            "All topics",
            "Body",
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          "source": "w"
        }
      ],
      "glosses": [
        "Stenosis."
      ],
      "id": "en-arctation-en-noun-dE93RsAd",
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "Stenosis",
          "stenosis"
        ]
      ],
      "raw_glosses": [
        "(obsolete, medicine) Stenosis."
      ],
      "related": [
        {
          "word": "coarctation"
        }
      ],
      "tags": [
        "countable",
        "obsolete",
        "uncountable"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "arctation"
}

{
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    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "arctus",
        "4": "",
        "5": "shut in, narrow"
      },
      "expansion": "Latin arctus (“shut in, narrow”)",
      "name": "uder"
    },
    {
      "args": {
        "1": "fr",
        "2": "arctation"
      },
      "expansion": "French arctation",
      "name": "cog"
    }
  ],
  "etymology_text": "From Latin arctus (“shut in, narrow”), past participle of arcere (“to shut in”). Compare French arctation.",
  "forms": [
    {
      "form": "arctations",
      "tags": [
        "plural"
      ]
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
      "word": "coarctation"
    }
  ],
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      "glosses": [
        "Stenosis."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "Stenosis",
          "stenosis"
        ]
      ],
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        "(obsolete, medicine) Stenosis."
      ],
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      "topics": [
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  "word": "arctation"
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