"grands-duchés" meaning in ฝรั่งเศส

{
  "lang": "ฝรั่งเศส",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "คำนาม",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Plurals with a red link for singular",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "grand-duché"
        }
      ],
      "glosses": [
        "พหูพจน์ของ grand-duché"
      ],
      "id": "th-grands-duchés-fr-noun-5ij4VUmg",
      "tags": [
        "form-of"
      ]
    }
  ],
  "word": "grands-duchés"
}

{
  "lang": "ฝรั่งเศส",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "คำนาม",
  "senses": [
    {
      "categories": [
        "Plurals with a red link for singular"
      ],
      "form_of": [
        {
          "word": "grand-duché"
        }
      ],
      "glosses": [
        "พหูพจน์ของ grand-duché"
      ],
      "tags": [
        "form-of"
      ]
    }
  ],
  "word": "grands-duchés"
}