"hard rock" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "en",
        "3": "hard rock"
      },
      "expansion": "Unadapted borrowing from English hard rock",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from English hard rock.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "head": "hard rock"
      },
      "expansion": "hard rock m (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "hard rock"
      ],
      "id": "en-hard_rock-es-noun-68ufucDZ",
      "links": [
        [
          "hard rock",
          "hard rock#English"
        ]
      ],
      "tags": [
        "masculine",
        "uncountable"
      ],
      "wikipedia": [
        "Royal Spanish Academy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌxaɾd ˈrok/"
    },
    {
      "ipa": "[ˌxaɾð̞ ˈrok]"
    }
  ],
  "word": "hard rock"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "en",
        "3": "hard rock"
      },
      "expansion": "Unadapted borrowing from English hard rock",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from English hard rock.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "head": "hard rock"
      },
      "expansion": "hard rock m (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish multiword terms",
        "Spanish nouns",
        "Spanish terms borrowed from English",
        "Spanish terms derived from English",
        "Spanish terms spelled with K",
        "Spanish terms with IPA pronunciation",
        "Spanish unadapted borrowings from English",
        "Spanish uncountable nouns"
      ],
      "glosses": [
        "hard rock"
      ],
      "links": [
        [
          "hard rock",
          "hard rock#English"
        ]
      ],
      "tags": [
        "masculine",
        "uncountable"
      ],
      "wikipedia": [
        "Royal Spanish Academy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌxaɾd ˈrok/"
    },
    {
      "ipa": "[ˌxaɾð̞ ˈrok]"
    }
  ],
  "word": "hard rock"
}