"sistren" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en anglais à traduire",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Termes archaïques en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "TomSimonite, Inside the Alexa friendly world of Wikidata, Wired, 18 février 2019",
          "text": "But when you ask Google Assistant or one of its sistren for a celebrity’s date of birth or the location of a famous battle, it has to go find the answer."
        }
      ],
      "form_of": [
        {
          "word": "sister"
        }
      ],
      "glosses": [
        "Pluriel de sister."
      ],
      "id": "fr-sistren-en-noun-K5wMp334",
      "tags": [
        "archaic"
      ]
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "sistren"
}

{
  "categories": [
    "Formes de noms communs en anglais",
    "anglais"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        "Exemples en anglais",
        "Exemples en anglais à traduire",
        "Termes archaïques en anglais"
      ],
      "examples": [
        {
          "ref": "TomSimonite, Inside the Alexa friendly world of Wikidata, Wired, 18 février 2019",
          "text": "But when you ask Google Assistant or one of its sistren for a celebrity’s date of birth or the location of a famous battle, it has to go find the answer."
        }
      ],
      "form_of": [
        {
          "word": "sister"
        }
      ],
      "glosses": [
        "Pluriel de sister."
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "sistren"
}