"пещерный" meaning in Russe

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Dérivations en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en russe suffixés avec -ный",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Russe",
      "orig": "russe",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Dérivé de пещера, peščera (« grotte, caverne »), avec le suffixe -ный, -nyï."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "adj",
  "pos_title": "Adjectif",
  "raw_tags": [
    "peščernyï"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en russe",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "De grotte, de caverne."
      ],
      "id": "fr-пещерный-ru-adj-3ezuqQKN"
    }
  ],
  "sounds": [
    {
      "ipa": "\\pʲɪˈɕːernɨɪ̯\\"
    }
  ],
  "word": "пещерный"
}

{
  "categories": [
    "Adjectifs en russe",
    "Dérivations en russe",
    "Lemmes en russe",
    "Mots en russe suffixés avec -ный",
    "russe"
  ],
  "etymology_texts": [
    "Dérivé de пещера, peščera (« grotte, caverne »), avec le suffixe -ный, -nyï."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "adj",
  "pos_title": "Adjectif",
  "raw_tags": [
    "peščernyï"
  ],
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en russe"
      ],
      "glosses": [
        "De grotte, de caverne."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\pʲɪˈɕːernɨɪ̯\\"
    }
  ],
  "word": "пещерный"
}