"сестрёнка" meaning in Russe

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Russe",
      "orig": "russe",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Diminutif de сестра, sestra (« sœur »)."
  ],
  "forms": [
    {
      "form": "братишка",
      "source": "form line template 'équiv-pour'",
      "tags": [
        "masculine"
      ]
    }
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "sestrjonka"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en russe de la famille",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en russe",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Petite sœur, sœurette."
      ],
      "id": "fr-сестрёнка-ru-noun-sECoYCLn",
      "raw_tags": [
        "Famille"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\sʲɪˈstrʲɵnkə\\"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "сестрёнка"
}

{
  "categories": [
    "Lemmes en russe",
    "Noms communs en russe",
    "russe"
  ],
  "etymology_texts": [
    "Diminutif de сестра, sestra (« sœur »)."
  ],
  "forms": [
    {
      "form": "братишка",
      "source": "form line template 'équiv-pour'",
      "tags": [
        "masculine"
      ]
    }
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "sestrjonka"
  ],
  "senses": [
    {
      "categories": [
        "Lexique en russe de la famille",
        "Wiktionnaire:Exemples manquants en russe"
      ],
      "glosses": [
        "Petite sœur, sœurette."
      ],
      "raw_tags": [
        "Famille"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\sʲɪˈstrʲɵnkə\\"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "сестрёнка"
}