"Du" meaning in Breton

{
  "etymology_text": "From du (“black”).",
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "proper noun",
        "g": "m"
      },
      "expansion": "Du m",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Breton entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Breton terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "br",
          "name": "Months",
          "orig": "br:Months",
          "parents": [
            "Periodic occurrences",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "November"
      ],
      "id": "en-Du-br-name-neb-HXJl",
      "links": [
        [
          "November",
          "November"
        ]
      ],
      "related": [
        {
          "sense": "month",
          "word": "Previous: Here. Next: Kerzu"
        }
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdyː/"
    }
  ],
  "word": "Du"
}

{
  "etymology_text": "From du (“black”).",
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "proper noun",
        "g": "m"
      },
      "expansion": "Du m",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "name",
  "related": [
    {
      "sense": "month",
      "word": "Previous: Here. Next: Kerzu"
    }
  ],
  "senses": [
    {
      "categories": [
        "Breton entries with incorrect language header",
        "Breton lemmas",
        "Breton masculine nouns",
        "Breton proper nouns",
        "Breton terms with non-redundant non-automated sortkeys",
        "Pages with 7 entries",
        "Pages with entries",
        "br:Months"
      ],
      "glosses": [
        "November"
      ],
      "links": [
        [
          "November",
          "November"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdyː/"
    }
  ],
  "word": "Du"
}