"пятеро" meaning in Russe

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en russe issus d’un mot en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Russe",
      "orig": "russe",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "пятерик"
    },
    {
      "word": "пятёрка"
    },
    {
      "word": "пятерня"
    }
  ],
  "etymology_texts": [
    "Du vieux slave пѧтєро, pętero qui donne aussi le polonais pięcioro, le tchèque patero ; apparenté à пять, pjať (« cinq »)."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "pjatero"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en russe",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Quintuor, groupe de cinq."
      ],
      "id": "fr-пятеро-ru-noun-n05cOCK~"
    }
  ],
  "sounds": [
    {
      "ipa": "\\pʲætʲɪrə\\"
    }
  ],
  "tags": [
    "neuter"
  ],
  "word": "пятеро"
}

{
  "categories": [
    "Lemmes en russe",
    "Mots en russe issus d’un mot en vieux slave",
    "Noms communs en russe",
    "russe"
  ],
  "derived": [
    {
      "word": "пятерик"
    },
    {
      "word": "пятёрка"
    },
    {
      "word": "пятерня"
    }
  ],
  "etymology_texts": [
    "Du vieux slave пѧтєро, pętero qui donne aussi le polonais pięcioro, le tchèque patero ; apparenté à пять, pjať (« cinq »)."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "pjatero"
  ],
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en russe"
      ],
      "glosses": [
        "Quintuor, groupe de cinq."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\pʲætʲɪrə\\"
    }
  ],
  "tags": [
    "neuter"
  ],
  "word": "пятеро"
}