"buenísimas" meaning in Spanish

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "superlative adjective form"
      },
      "expansion": "buenísimas",
      "name": "head"
    }
  ],
  "hyphenation": [
    "bue‧ní‧si‧mas"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "buenísimo"
        }
      ],
      "glosses": [
        "feminine plural of buenísimo"
      ],
      "id": "en-buenísimas-es-adj-h2iWwTGJ",
      "links": [
        [
          "buenísimo",
          "buenísimo#Spanish"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bweˈnisimas/"
    },
    {
      "ipa": "[bweˈni.si.mas]"
    },
    {
      "rhymes": "-isimas"
    }
  ],
  "word": "buenísimas"
}

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "superlative adjective form"
      },
      "expansion": "buenísimas",
      "name": "head"
    }
  ],
  "hyphenation": [
    "bue‧ní‧si‧mas"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Rhymes:Spanish/isimas",
        "Rhymes:Spanish/isimas/4 syllables",
        "Spanish 4-syllable words",
        "Spanish entries with incorrect language header",
        "Spanish non-lemma forms",
        "Spanish superlative adjective forms",
        "Spanish terms with IPA pronunciation"
      ],
      "form_of": [
        {
          "word": "buenísimo"
        }
      ],
      "glosses": [
        "feminine plural of buenísimo"
      ],
      "links": [
        [
          "buenísimo",
          "buenísimo#Spanish"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bweˈnisimas/"
    },
    {
      "ipa": "[bweˈni.si.mas]"
    },
    {
      "rhymes": "-isimas"
    }
  ],
  "word": "buenísimas"
}