"eista" meaning in Oudnoords

{
  "categories": [
    {
      "kind": "other",
      "name": "Woorden in het Oudnoords",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Oudnoords van lengte 5",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Zelfstandig naamwoord in het Oudnoords",
      "parents": [],
      "source": "w"
    }
  ],
  "hyphenation": "eis·ta",
  "lang": "Oudnoords",
  "lang_code": "unknown",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Anatomie_in_het_Oudnoords",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "testikel"
      ],
      "id": "nl-eista-unknown-noun-JR0Lzj8X",
      "topics": [
        "anatomy"
      ]
    }
  ],
  "synonyms": [
    {
      "sense_index": 2,
      "word": "bǫllr"
    }
  ],
  "word": "eista"
}

{
  "categories": [
    "Woorden in het Oudnoords",
    "Woorden in het Oudnoords van lengte 5",
    "Zelfstandig naamwoord in het Oudnoords"
  ],
  "hyphenation": "eis·ta",
  "lang": "Oudnoords",
  "lang_code": "unknown",
  "pos": "noun",
  "pos_title": "Zelfstandig naamwoord",
  "senses": [
    {
      "categories": [
        "Anatomie_in_het_Oudnoords"
      ],
      "glosses": [
        "testikel"
      ],
      "topics": [
        "anatomy"
      ]
    }
  ],
  "synonyms": [
    {
      "sense_index": 2,
      "word": "bǫllr"
    }
  ],
  "word": "eista"
}