"duum" meaning in Latin

{
  "derived": [
    {
      "_dis1": "0 0",
      "word": "duumvir"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "la",
        "2": "duo",
        "3": "",
        "4": "two"
      },
      "expansion": "duo (“two”)",
      "name": "m"
    },
    {
      "args": {
        "1": "la",
        "2": "itc-ola",
        "3": "-"
      },
      "expansion": "Old Latin",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "duōrum"
      },
      "expansion": "Latin duōrum",
      "name": "cog"
    }
  ],
  "etymology_text": "An inflected form of duo (“two”) from Old Latin, where the use of -um instead of -ōrum (cf. Latin duōrum) at the end of second-declension nouns was an archaic feature.",
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "numeral form"
      },
      "expansion": "duum",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "num",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "english": "Good day, good luck to you, the two fathers of us two!",
          "ref": "3rd century BCE, Gnaeus Naevius, Tarentilla",
          "text": "Salvi et fortunati sitis duo duum nostrum patres!",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "word": "duo"
        }
      ],
      "glosses": [
        "genitive masculine of duo"
      ],
      "id": "en-duum-la-num-agWU0mGj",
      "links": [
        [
          "duo",
          "duo#Latin"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "masculine"
      ]
    },
    {
      "categories": [
        {
          "_dis": "41 59",
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "word": "duo"
        }
      ],
      "glosses": [
        "genitive neuter of duo"
      ],
      "id": "en-duum-la-num-yLzQo05f",
      "links": [
        [
          "duo",
          "duo#Latin"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "neuter"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdu.um/",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "[ˈd̪uʊ̃ˑ]",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "/ˈdu.um/",
      "note": "modern Italianate Ecclesiastical"
    },
    {
      "ipa": "[ˈd̪uːum]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "word": "duûm"
    }
  ],
  "word": "duum"
}

{
  "categories": [
    "Latin 2-syllable words",
    "Latin entries with incorrect language header",
    "Latin non-lemma forms",
    "Latin numeral forms",
    "Latin terms derived from Old Latin",
    "Latin terms with IPA pronunciation"
  ],
  "derived": [
    {
      "word": "duumvir"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "la",
        "2": "duo",
        "3": "",
        "4": "two"
      },
      "expansion": "duo (“two”)",
      "name": "m"
    },
    {
      "args": {
        "1": "la",
        "2": "itc-ola",
        "3": "-"
      },
      "expansion": "Old Latin",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "duōrum"
      },
      "expansion": "Latin duōrum",
      "name": "cog"
    }
  ],
  "etymology_text": "An inflected form of duo (“two”) from Old Latin, where the use of -um instead of -ōrum (cf. Latin duōrum) at the end of second-declension nouns was an archaic feature.",
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "numeral form"
      },
      "expansion": "duum",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Latin terms with quotations"
      ],
      "examples": [
        {
          "english": "Good day, good luck to you, the two fathers of us two!",
          "ref": "3rd century BCE, Gnaeus Naevius, Tarentilla",
          "text": "Salvi et fortunati sitis duo duum nostrum patres!",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "word": "duo"
        }
      ],
      "glosses": [
        "genitive masculine of duo"
      ],
      "links": [
        [
          "duo",
          "duo#Latin"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "masculine"
      ]
    },
    {
      "form_of": [
        {
          "word": "duo"
        }
      ],
      "glosses": [
        "genitive neuter of duo"
      ],
      "links": [
        [
          "duo",
          "duo#Latin"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "neuter"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdu.um/",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "[ˈd̪uʊ̃ˑ]",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "/ˈdu.um/",
      "note": "modern Italianate Ecclesiastical"
    },
    {
      "ipa": "[ˈd̪uːum]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "synonyms": [
    {
      "word": "duûm"
    }
  ],
  "word": "duum"
}