"pierre" meaning in Francés medio

{
  "categories": [
    {
      "kind": "other",
      "name": "FRM:Palabras sin transcripción fonética",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "FRM:Sustantivos",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "FRM:Sustantivos femeninos",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Francés medio",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "pierre",
        "leng": "frm"
      },
      "expansion": "Del francés antiguo pierre",
      "name": "etimología"
    }
  ],
  "etymology_text": "Del francés antiguo pierre, y este del latín petra, del griego antiguo πέτρα (pétra), del protoindoeuropeo *per.",
  "extra_sounds": {
    "pronunciación": "falta agregar"
  },
  "forms": [
    {
      "form": "pierre",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "pierres",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Francés medio",
  "lang_code": "frm",
  "pos": "noun",
  "pos_title": "sustantivo femenino",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "FRM:Geología",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Pierda."
      ],
      "id": "es-pierre-frm-noun-p1A3MCmZ",
      "sense_index": "1",
      "topics": [
        "geology"
      ]
    }
  ],
  "synonyms": [
    {
      "sense_index": "1",
      "word": "roche"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "pierre"
}

{
  "categories": [
    "FRM:Palabras sin transcripción fonética",
    "FRM:Sustantivos",
    "FRM:Sustantivos femeninos",
    "Francés medio"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "pierre",
        "leng": "frm"
      },
      "expansion": "Del francés antiguo pierre",
      "name": "etimología"
    }
  ],
  "etymology_text": "Del francés antiguo pierre, y este del latín petra, del griego antiguo πέτρα (pétra), del protoindoeuropeo *per.",
  "extra_sounds": {
    "pronunciación": "falta agregar"
  },
  "forms": [
    {
      "form": "pierre",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "pierres",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Francés medio",
  "lang_code": "frm",
  "pos": "noun",
  "pos_title": "sustantivo femenino",
  "senses": [
    {
      "categories": [
        "FRM:Geología"
      ],
      "glosses": [
        "Pierda."
      ],
      "sense_index": "1",
      "topics": [
        "geology"
      ]
    }
  ],
  "synonyms": [
    {
      "sense_index": "1",
      "word": "roche"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "pierre"
}