"двадцатиодноугольник" meaning in Russisch

{
  "categories": [
    {
      "kind": "other",
      "name": "Woorden in het Russisch",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Russisch van lengte 20",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Zelfstandig naamwoord in het Russisch",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Russisch",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Meetkunde_in_het_Russisch",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "eenentwintighoek"
      ],
      "id": "nl-двадцатиодноугольник-ru-noun-8AbjQ-Kw",
      "topics": [
        "geometry"
      ]
    }
  ],
  "word": "двадцатиодноугольник"
}

{
  "categories": [
    "Woorden in het Russisch",
    "Woorden in het Russisch van lengte 20",
    "Zelfstandig naamwoord in het Russisch"
  ],
  "lang": "Russisch",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "categories": [
        "Meetkunde_in_het_Russisch"
      ],
      "glosses": [
        "eenentwintighoek"
      ],
      "topics": [
        "geometry"
      ]
    }
  ],
  "word": "двадцатиодноугольник"
}