"пещера" meaning in Bulgare

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en bulgare",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en bulgare issus d’un mot en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en bulgare",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Bulgare",
      "orig": "bulgare",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du vieux slave печера, pečera (« grotte »)."
  ],
  "forms": [
    {
      "form": "Forme de base",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "Forme articulée",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "пещерата",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "пещери",
      "raw_tags": [
        "Forme de base"
      ],
      "tags": [
        "plural"
      ]
    },
    {
      "form": "пещерите",
      "raw_tags": [
        "Forme articulée"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Bulgare",
  "lang_code": "bg",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Grotte."
      ],
      "id": "fr-пещера-bg-noun-PfIiCU5q"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "пещера"
}

{
  "categories": [
    "Lemmes en bulgare",
    "Mots en bulgare issus d’un mot en vieux slave",
    "Noms communs en bulgare",
    "bulgare"
  ],
  "etymology_texts": [
    "Du vieux slave печера, pečera (« grotte »)."
  ],
  "forms": [
    {
      "form": "Forme de base",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "Forme articulée",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "пещерата",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "пещери",
      "raw_tags": [
        "Forme de base"
      ],
      "tags": [
        "plural"
      ]
    },
    {
      "form": "пещерите",
      "raw_tags": [
        "Forme articulée"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Bulgare",
  "lang_code": "bg",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Grotte."
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "пещера"
}