"dùn" meaning in Scottish Gaelic

{
  "etymology_templates": [
    {
      "args": {
        "1": "gd",
        "2": "sga",
        "3": "dún",
        "4": "",
        "5": "fort, fortress"
      },
      "expansion": "Old Irish dún (“fort, fortress”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "gd",
        "2": "cel-pro",
        "3": "*dūnom",
        "4": "",
        "5": "stronghold"
      },
      "expansion": "Proto-Celtic *dūnom (“stronghold”)",
      "name": "inh"
    }
  ],
  "etymology_text": "From Old Irish dún (“fort, fortress”), from Proto-Celtic *dūnom (“stronghold”).",
  "forms": [
    {
      "form": "dùin",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "gd",
        "2": "noun",
        "3": "plural",
        "4": "dùin",
        "g": "m"
      },
      "expansion": "dùn m (plural dùin)",
      "name": "head"
    }
  ],
  "lang": "Scottish Gaelic",
  "lang_code": "gd",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0 0",
      "tags": [
        "masculine"
      ],
      "word": "caisteal"
    },
    {
      "_dis1": "0 0 0",
      "tags": [
        "feminine"
      ],
      "word": "daingneach"
    },
    {
      "_dis1": "0 0 0",
      "word": "Dùn Èideann"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "65 27 8",
          "kind": "other",
          "name": "Scottish Gaelic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "heap, mould"
      ],
      "id": "en-dùn-gd-noun-gwNrW-nc",
      "links": [
        [
          "heap",
          "heap"
        ],
        [
          "mould",
          "mould"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "glosses": [
        "fort, fortress, castle"
      ],
      "id": "en-dùn-gd-noun-eBXhptKw",
      "links": [
        [
          "fort",
          "fort"
        ],
        [
          "fortress",
          "fortress"
        ],
        [
          "castle",
          "castle"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "glosses": [
        "town"
      ],
      "id": "en-dùn-gd-noun-UKyB-XAy",
      "links": [
        [
          "town",
          "town"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/t̪uːn/"
    }
  ],
  "word": "dùn"
}

{
  "categories": [
    "Scottish Gaelic entries with incorrect language header",
    "Scottish Gaelic lemmas",
    "Scottish Gaelic masculine nouns",
    "Scottish Gaelic nouns",
    "Scottish Gaelic terms derived from Old Irish",
    "Scottish Gaelic terms derived from Proto-Celtic",
    "Scottish Gaelic terms inherited from Old Irish",
    "Scottish Gaelic terms inherited from Proto-Celtic",
    "Scottish Gaelic terms with IPA pronunciation"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "gd",
        "2": "sga",
        "3": "dún",
        "4": "",
        "5": "fort, fortress"
      },
      "expansion": "Old Irish dún (“fort, fortress”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "gd",
        "2": "cel-pro",
        "3": "*dūnom",
        "4": "",
        "5": "stronghold"
      },
      "expansion": "Proto-Celtic *dūnom (“stronghold”)",
      "name": "inh"
    }
  ],
  "etymology_text": "From Old Irish dún (“fort, fortress”), from Proto-Celtic *dūnom (“stronghold”).",
  "forms": [
    {
      "form": "dùin",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "gd",
        "2": "noun",
        "3": "plural",
        "4": "dùin",
        "g": "m"
      },
      "expansion": "dùn m (plural dùin)",
      "name": "head"
    }
  ],
  "lang": "Scottish Gaelic",
  "lang_code": "gd",
  "pos": "noun",
  "related": [
    {
      "tags": [
        "masculine"
      ],
      "word": "caisteal"
    },
    {
      "tags": [
        "feminine"
      ],
      "word": "daingneach"
    },
    {
      "word": "Dùn Èideann"
    }
  ],
  "senses": [
    {
      "glosses": [
        "heap, mould"
      ],
      "links": [
        [
          "heap",
          "heap"
        ],
        [
          "mould",
          "mould"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "glosses": [
        "fort, fortress, castle"
      ],
      "links": [
        [
          "fort",
          "fort"
        ],
        [
          "fortress",
          "fortress"
        ],
        [
          "castle",
          "castle"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "glosses": [
        "town"
      ],
      "links": [
        [
          "town",
          "town"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/t̪uːn/"
    }
  ],
  "word": "dùn"
}