"dvou" meaning in Czech

{
  "head_templates": [
    {
      "args": {
        "1": "cs",
        "2": "numeral form"
      },
      "expansion": "dvou",
      "name": "head"
    }
  ],
  "lang": "Czech",
  "lang_code": "cs",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Czech entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "genitive/locative of dva"
      ],
      "id": "en-dvou-cs-num-yo4EwAHB",
      "links": [
        [
          "dva",
          "dva#Czech"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈdvou̯]"
    }
  ],
  "word": "dvou"
}

{
  "head_templates": [
    {
      "args": {
        "1": "cs",
        "2": "numeral form"
      },
      "expansion": "dvou",
      "name": "head"
    }
  ],
  "lang": "Czech",
  "lang_code": "cs",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Czech entries with incorrect language header",
        "Czech non-lemma forms",
        "Czech numeral forms",
        "Czech terms with IPA pronunciation"
      ],
      "glosses": [
        "genitive/locative of dva"
      ],
      "links": [
        [
          "dva",
          "dva#Czech"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈdvou̯]"
    }
  ],
  "word": "dvou"
}