"peșterilor" meaning in Roumain

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms communs en roumain",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Roumain",
      "orig": "roumain",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Roumain",
  "lang_code": "ro",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Cas datifs en roumain",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Cas génitifs en roumain",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "peșteră"
        }
      ],
      "glosses": [
        "Cas datif et génitif articulé pluriel de peșteră."
      ],
      "id": "fr-peșterilor-ro-noun-POlZegYt"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Cas vocatifs en roumain",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "peșteră"
        }
      ],
      "glosses": [
        "Cas vocatif pluriel de peșteră."
      ],
      "id": "fr-peșterilor-ro-noun-x6Kbw49F"
    }
  ],
  "tags": [
    "feminine",
    "form-of",
    "plural"
  ],
  "word": "peșterilor"
}

{
  "categories": [
    "Formes de noms communs en roumain",
    "roumain"
  ],
  "lang": "Roumain",
  "lang_code": "ro",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        "Cas datifs en roumain",
        "Cas génitifs en roumain"
      ],
      "form_of": [
        {
          "word": "peșteră"
        }
      ],
      "glosses": [
        "Cas datif et génitif articulé pluriel de peșteră."
      ]
    },
    {
      "categories": [
        "Cas vocatifs en roumain"
      ],
      "form_of": [
        {
          "word": "peșteră"
        }
      ],
      "glosses": [
        "Cas vocatif pluriel de peșteră."
      ]
    }
  ],
  "tags": [
    "feminine",
    "form-of",
    "plural"
  ],
  "word": "peșterilor"
}