"задница" meaning in Russe

{
  "categories": [
    {
      "kind": "other",
      "name": "Dérivations en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en russe suffixés avec -ица",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Russe",
      "orig": "russe",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Motdérivé de задний, zadniï (« postérieur »), avec le suffixe -ица, -ica, apparenté au bulgare задница, zadnica, au tchèque zadnice."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "zadnica"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en russe de l’anatomie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en russe",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Derrière, postérieur, cul."
      ],
      "id": "fr-задница-ru-noun-lOQoteur",
      "topics": [
        "anatomy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\zadʲnʲɪt͡sə\\"
    }
  ],
  "synonyms": [
    {
      "word": "ягодица"
    },
    {
      "word": "седалище"
    },
    {
      "word": "жопа"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "задница"
}

{
  "categories": [
    "Dérivations en russe",
    "Lemmes en russe",
    "Mots en russe suffixés avec -ица",
    "Noms communs en russe",
    "russe"
  ],
  "etymology_texts": [
    "Motdérivé de задний, zadniï (« postérieur »), avec le suffixe -ица, -ica, apparenté au bulgare задница, zadnica, au tchèque zadnice."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "zadnica"
  ],
  "senses": [
    {
      "categories": [
        "Lexique en russe de l’anatomie",
        "Wiktionnaire:Exemples manquants en russe"
      ],
      "glosses": [
        "Derrière, postérieur, cul."
      ],
      "topics": [
        "anatomy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\zadʲnʲɪt͡sə\\"
    }
  ],
  "synonyms": [
    {
      "word": "ягодица"
    },
    {
      "word": "седалище"
    },
    {
      "word": "жопа"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "задница"
}