"dualling" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dual",
        "3": "ing"
      },
      "expansion": "dual + -ing",
      "name": "suffix"
    }
  ],
  "etymology_text": "From dual + -ing.",
  "forms": [
    {
      "form": "duallings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
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      "expansion": "dualling (countable and uncountable, plural duallings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "94 6",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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            "Entry maintenance"
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          "source": "w+disamb"
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        {
          "_dis": "79 21",
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          "name": "English terms suffixed with -ing",
          "parents": [],
          "source": "w+disamb"
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      "examples": [
        {
          "ref": "1998, Great Britain. Parliament. House of Commons, Parliamentary Debates:",
          "text": "Way back in 1971, the Government of the day first published plans for a high-capacity road network, which included the dualling of the A47 from King's Lynn to Great Yarmouth.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The conversion of a road into a dual carriageway"
      ],
      "id": "en-dualling-en-noun-m-xGC58Q",
      "links": [
        [
          "conversion",
          "conversion"
        ],
        [
          "road",
          "road"
        ],
        [
          "dual carriageway",
          "dual carriageway"
        ]
      ],
      "raw_glosses": [
        "(British spelling) The conversion of a road into a dual carriageway"
      ],
      "tags": [
        "UK",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "dualling"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dual",
        "3": "ing"
      },
      "expansion": "dual + -ing",
      "name": "suffix"
    }
  ],
  "etymology_text": "From dual + -ing.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "dualling",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "form_of": [
        {
          "word": "dual"
        }
      ],
      "glosses": [
        "present participle and gerund of dual"
      ],
      "id": "en-dualling-en-verb-8QtvJeMB",
      "links": [
        [
          "dual",
          "dual#English"
        ]
      ],
      "related": [
        {
          "word": "duelling"
        }
      ],
      "tags": [
        "form-of",
        "gerund",
        "participle",
        "present"
      ]
    }
  ],
  "word": "dualling"
}

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    "English verb forms",
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  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dual",
        "3": "ing"
      },
      "expansion": "dual + -ing",
      "name": "suffix"
    }
  ],
  "etymology_text": "From dual + -ing.",
  "forms": [
    {
      "form": "duallings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
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      "expansion": "dualling (countable and uncountable, plural duallings)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
      "categories": [
        "British English forms",
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        "Quotation templates to be cleaned"
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      "examples": [
        {
          "ref": "1998, Great Britain. Parliament. House of Commons, Parliamentary Debates:",
          "text": "Way back in 1971, the Government of the day first published plans for a high-capacity road network, which included the dualling of the A47 from King's Lynn to Great Yarmouth.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The conversion of a road into a dual carriageway"
      ],
      "links": [
        [
          "conversion",
          "conversion"
        ],
        [
          "road",
          "road"
        ],
        [
          "dual carriageway",
          "dual carriageway"
        ]
      ],
      "raw_glosses": [
        "(British spelling) The conversion of a road into a dual carriageway"
      ],
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        "UK",
        "countable",
        "uncountable"
      ]
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  ],
  "word": "dualling"
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{
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    "English entries with incorrect language header",
    "English lemmas",
    "English non-lemma forms",
    "English nouns",
    "English terms suffixed with -ing",
    "English uncountable nouns",
    "English verb forms",
    "Pages with 1 entry",
    "Pages with entries"
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  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dual",
        "3": "ing"
      },
      "expansion": "dual + -ing",
      "name": "suffix"
    }
  ],
  "etymology_text": "From dual + -ing.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "dualling",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "duelling"
    }
  ],
  "senses": [
    {
      "form_of": [
        {
          "word": "dual"
        }
      ],
      "glosses": [
        "present participle and gerund of dual"
      ],
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        [
          "dual",
          "dual#English"
        ]
      ],
      "tags": [
        "form-of",
        "gerund",
        "participle",
        "present"
      ]
    }
  ],
  "word": "dualling"
}