"dún-" meaning in Irish

{
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "mga",
        "3": "dun-"
      },
      "expansion": "Middle Irish dun-",
      "name": "der"
    }
  ],
  "etymology_text": "Lengthened from Middle Irish dun-, combining form of duine before a broad consonant.",
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "prefix"
      },
      "expansion": "dún-",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "dún- + bású (“killing”) → dúnbhású (“homicide”)",
          "type": "example"
        },
        {
          "text": "dún- + marú (“killing”) → dúnmharú (“murder”)",
          "type": "example"
        },
        {
          "text": "dún- + argain (“destruction”) → dúnorgain (“manslaughter”)",
          "type": "example"
        },
        {
          "text": "dún- + poll (“hole”) → dúnpholl (“manhole”)",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "extra": "human, person",
          "word": "duine"
        }
      ],
      "glosses": [
        "Combining form of duine (“human, person”)"
      ],
      "id": "en-dún--ga-prefix-LuDaptp8",
      "links": [
        [
          "duine",
          "duine#Irish"
        ]
      ],
      "related": [
        {
          "word": "daon-"
        }
      ],
      "tags": [
        "form-of",
        "in-compounds",
        "morpheme"
      ]
    }
  ],
  "word": "dún-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "mga",
        "3": "dun-"
      },
      "expansion": "Middle Irish dun-",
      "name": "der"
    }
  ],
  "etymology_text": "Lengthened from Middle Irish dun-, combining form of duine before a broad consonant.",
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "prefix"
      },
      "expansion": "dún-",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "prefix",
  "related": [
    {
      "word": "daon-"
    }
  ],
  "senses": [
    {
      "categories": [
        "Irish combining forms",
        "Irish entries with incorrect language header",
        "Irish lemmas",
        "Irish prefixes",
        "Irish terms derived from Middle Irish",
        "Pages using catfix",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "dún- + bású (“killing”) → dúnbhású (“homicide”)",
          "type": "example"
        },
        {
          "text": "dún- + marú (“killing”) → dúnmharú (“murder”)",
          "type": "example"
        },
        {
          "text": "dún- + argain (“destruction”) → dúnorgain (“manslaughter”)",
          "type": "example"
        },
        {
          "text": "dún- + poll (“hole”) → dúnpholl (“manhole”)",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "extra": "human, person",
          "word": "duine"
        }
      ],
      "glosses": [
        "Combining form of duine (“human, person”)"
      ],
      "links": [
        [
          "duine",
          "duine#Irish"
        ]
      ],
      "tags": [
        "form-of",
        "in-compounds",
        "morpheme"
      ]
    }
  ],
  "word": "dún-"
}