"ἰσχιάς" meaning in Древнегреческий

{
  "categories": [
    {
      "kind": "other",
      "name": "Болезни/grc",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Древнегреческие существительные",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Древнегреческий язык",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Нет сведений о составе слова",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Нужна этимология",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Слова из 6 букв/grc",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_text": "Из ??",
  "lang": "Древнегреческий",
  "lang_code": "grc",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "ишиас"
      ],
      "id": "ru-ἰσχιάς-grc-noun-vchvr3ns",
      "raw_glosses": [
        "мед. ишиас"
      ],
      "topics": [
        "medicine"
      ]
    }
  ],
  "word": "ἰσχιάς"
}

{
  "categories": [
    "Болезни/grc",
    "Древнегреческие существительные",
    "Древнегреческий язык",
    "Нет сведений о составе слова",
    "Нужна этимология",
    "Слова из 6 букв/grc"
  ],
  "etymology_text": "Из ??",
  "lang": "Древнегреческий",
  "lang_code": "grc",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "ишиас"
      ],
      "raw_glosses": [
        "мед. ишиас"
      ],
      "topics": [
        "medicine"
      ]
    }
  ],
  "word": "ἰσχιάς"
}