"λήθη" meaning in 古典ギリシア語

{
  "categories": [
    {
      "kind": "other",
      "name": "印欧祖語 赤リンク",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "印欧祖語 赤リンク/m",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "古典ギリシア語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "古典ギリシア語 名詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "古典ギリシア語_ギリシア祖語由来",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "古典ギリシア語_印欧祖語由来",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "ギリシア祖語*lā́tʰā < 印欧祖語*léh₂dʰeh₂ < *leh₂-"
  ],
  "forms": [
    {
      "form": "λήθης"
    }
  ],
  "lang": "古典ギリシア語",
  "lang_code": "grc",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "忘却。"
      ],
      "id": "ja-λήθη-grc-noun-cEpLybSI"
    }
  ],
  "word": "λήθη"
}

{
  "categories": [
    "印欧祖語 赤リンク",
    "印欧祖語 赤リンク/m",
    "古典ギリシア語",
    "古典ギリシア語 名詞",
    "古典ギリシア語_ギリシア祖語由来",
    "古典ギリシア語_印欧祖語由来"
  ],
  "etymology_texts": [
    "ギリシア祖語*lā́tʰā < 印欧祖語*léh₂dʰeh₂ < *leh₂-"
  ],
  "forms": [
    {
      "form": "λήθης"
    }
  ],
  "lang": "古典ギリシア語",
  "lang_code": "grc",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "忘却。"
      ]
    }
  ],
  "word": "λήθη"
}