"πέτρα" meaning in ギリシア語

{
  "categories": [
    {
      "kind": "other",
      "name": "ギリシア語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "ギリシア語_名詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "国際音声記号あり",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "ギリシア語",
  "lang_code": "unknown",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "石。"
      ],
      "id": "ja-πέτρα-unknown-noun-jAUv~M7p"
    }
  ],
  "sounds": [
    {
      "ipa": "'pɛ.tɾa"
    }
  ],
  "synonyms": [
    {
      "word": "λίθος"
    },
    {
      "word": "βράχος"
    }
  ],
  "word": "πέτρα"
}

{
  "categories": [
    "ギリシア語",
    "ギリシア語_名詞",
    "国際音声記号あり"
  ],
  "lang": "ギリシア語",
  "lang_code": "unknown",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "石。"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "'pɛ.tɾa"
    }
  ],
  "synonyms": [
    {
      "word": "λίθος"
    },
    {
      "word": "βράχος"
    }
  ],
  "word": "πέτρα"
}