"petra" meaning in Spanish

{
  "forms": [
    {
      "form": "petras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "petra f (plural petras)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "pe‧tra"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 10 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "es",
          "name": "Myrtle family plants",
          "orig": "es:Myrtle family plants",
          "parents": [
            "Myrtales order plants",
            "Shrubs",
            "Trees",
            "Plants",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Myrceugenia exsucca, a tree of Chile and Argentina."
      ],
      "id": "en-petra-es-noun-vlAf8p~j",
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpetɾa/"
    },
    {
      "ipa": "[ˈpe.t̪ɾa]"
    },
    {
      "rhymes": "-etɾa"
    }
  ],
  "word": "petra"
}

{
  "forms": [
    {
      "form": "petras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "petra f (plural petras)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "pe‧tra"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Entries using missing taxonomic name (genus)",
        "Pages with 10 entries",
        "Pages with entries",
        "Rhymes:Spanish/etɾa",
        "Rhymes:Spanish/etɾa/2 syllables",
        "Spanish 2-syllable words",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish nouns",
        "Spanish terms with IPA pronunciation",
        "es:Myrtle family plants"
      ],
      "glosses": [
        "Myrceugenia exsucca, a tree of Chile and Argentina."
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpetɾa/"
    },
    {
      "ipa": "[ˈpe.t̪ɾa]"
    },
    {
      "rhymes": "-etɾa"
    }
  ],
  "word": "petra"
}