"дук" meaning in Bulgare

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en bulgare",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en bulgare",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Bulgare",
      "orig": "bulgare",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "дукеса"
    }
  ],
  "forms": [
    {
      "form": "Forme de base",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "Forme articulée courte",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "дука",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "дукове",
      "raw_tags": [
        "class=\"sous-titre\" :Modèle:! Forme articulée longue :Modèle:! дукът :Modèle:!-",
        "Forme de base"
      ],
      "tags": [
        "singular",
        "plural"
      ]
    },
    {
      "form": "дуковете",
      "raw_tags": [
        "Forme articulée"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Bulgare",
  "lang_code": "bg",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Titres de noblesse en bulgare",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Duc (titre de noblesse)."
      ],
      "id": "fr-дук-bg-noun-N-bBq5c-",
      "topics": [
        "nobility"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "дук"
}

{
  "categories": [
    "Lemmes en bulgare",
    "Noms communs en bulgare",
    "bulgare"
  ],
  "derived": [
    {
      "word": "дукеса"
    }
  ],
  "forms": [
    {
      "form": "Forme de base",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "Forme articulée courte",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "дука",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "дукове",
      "raw_tags": [
        "class=\"sous-titre\" :Modèle:! Forme articulée longue :Modèle:! дукът :Modèle:!-",
        "Forme de base"
      ],
      "tags": [
        "singular",
        "plural"
      ]
    },
    {
      "form": "дуковете",
      "raw_tags": [
        "Forme articulée"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Bulgare",
  "lang_code": "bg",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Titres de noblesse en bulgare"
      ],
      "glosses": [
        "Duc (titre de noblesse)."
      ],
      "topics": [
        "nobility"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "дук"
}