"arcaísmo" meaning in Portugais

{
  "categories": [
    {
      "kind": "other",
      "name": "Dates manquantes en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en portugais issus d’un mot en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Portugais",
      "orig": "portugais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Siècle à préciser) Du latin archaismus."
  ],
  "forms": [
    {
      "form": "arcaísmos",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Portugais",
  "lang_code": "pt",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "arcaico"
    },
    {
      "word": "arcaísta"
    },
    {
      "word": "arcaizante"
    },
    {
      "word": "arcaizar"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en portugais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "arcaísmo linguístico.",
          "translation": "archaïsme linguistique."
        },
        {
          "text": "expressões que são consideradas como arcaísmos.",
          "translation": "expressions qui sont considérées comme des archaïsmes."
        }
      ],
      "glosses": [
        "Archaïsme."
      ],
      "id": "fr-arcaísmo-pt-noun-qWnqKDrX"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "arcaísmo"
}

{
  "categories": [
    "Dates manquantes en portugais",
    "Lemmes en portugais",
    "Mots en portugais issus d’un mot en latin",
    "Noms communs en portugais",
    "portugais"
  ],
  "etymology_texts": [
    "(Siècle à préciser) Du latin archaismus."
  ],
  "forms": [
    {
      "form": "arcaísmos",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Portugais",
  "lang_code": "pt",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "arcaico"
    },
    {
      "word": "arcaísta"
    },
    {
      "word": "arcaizante"
    },
    {
      "word": "arcaizar"
    }
  ],
  "senses": [
    {
      "categories": [
        "Exemples en portugais"
      ],
      "examples": [
        {
          "text": "arcaísmo linguístico.",
          "translation": "archaïsme linguistique."
        },
        {
          "text": "expressões que são consideradas como arcaísmos.",
          "translation": "expressions qui sont considérées comme des archaïsmes."
        }
      ],
      "glosses": [
        "Archaïsme."
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "arcaísmo"
}