"castorina" meaning in Occitan

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en occitan issus d’un mot en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en occitan",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Occitan en graphie normalisée",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Occitan",
      "orig": "occitan",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du latin castorinus."
  ],
  "forms": [
    {
      "form": "castorinas",
      "ipas": [
        "\\kastuˈɾino̞s\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Occitan",
  "lang_code": "oc",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "graphie normalisée"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en occitan du textile",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Castorine, étoffe de laine soyeuse."
      ],
      "id": "fr-castorina-oc-noun-wFd9tqYw",
      "topics": [
        "textiles"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kastuˈɾino̞]"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "castorina"
}

{
  "categories": [
    "Mots en occitan issus d’un mot en latin",
    "Noms communs en occitan",
    "Occitan en graphie normalisée",
    "occitan"
  ],
  "etymology_texts": [
    "Du latin castorinus."
  ],
  "forms": [
    {
      "form": "castorinas",
      "ipas": [
        "\\kastuˈɾino̞s\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Occitan",
  "lang_code": "oc",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "graphie normalisée"
  ],
  "senses": [
    {
      "categories": [
        "Lexique en occitan du textile"
      ],
      "glosses": [
        "Castorine, étoffe de laine soyeuse."
      ],
      "topics": [
        "textiles"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kastuˈɾino̞]"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "castorina"
}