"cabeza dura" meaning in Spanish

{
  "forms": [
    {
      "form": "cabezas duras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "cabeza dura m (plural cabezas duras)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "thickhead (stupid person)"
      ],
      "id": "en-cabeza_dura-es-noun-wwA5aef4",
      "links": [
        [
          "thickhead",
          "thickhead"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "categories": [
        {
          "_dis": "38 62",
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "22 78",
          "kind": "other",
          "name": "Spanish nouns with irregular gender",
          "parents": [
            "Nouns with irregular gender",
            "Irregular nouns",
            "Nouns by inflection type",
            "Nouns",
            "Lemmas"
          ],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "_dis1": "18 82",
          "word": "cabeciduro"
        },
        {
          "_dis1": "18 82",
          "word": "cabezadura"
        }
      ],
      "glosses": [
        "pigheaded person (stubborn person)"
      ],
      "id": "en-cabeza_dura-es-noun-eFNFaKz2",
      "links": [
        [
          "pigheaded",
          "pigheaded"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "cabeza dura"
}

{
  "categories": [
    "Spanish countable nouns",
    "Spanish entries with incorrect language header",
    "Spanish lemmas",
    "Spanish masculine nouns",
    "Spanish multiword terms",
    "Spanish nouns",
    "Spanish nouns with irregular gender",
    "Spanish nouns with red links in their headword lines"
  ],
  "derived": [
    {
      "word": "cabeciduro"
    },
    {
      "word": "cabezadura"
    }
  ],
  "forms": [
    {
      "form": "cabezas duras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "cabeza dura m (plural cabezas duras)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "thickhead (stupid person)"
      ],
      "links": [
        [
          "thickhead",
          "thickhead"
        ]
      ],
      "tags": [
        "masculine"
      ]
    },
    {
      "glosses": [
        "pigheaded person (stubborn person)"
      ],
      "links": [
        [
          "pigheaded",
          "pigheaded"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "cabeza dura"
}