"到頭" meaning in 日本語

{
  "categories": [
    {
      "kind": "other",
      "name": "日本語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語 副詞",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "とうとう"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "adv",
  "pos_title": "副詞",
  "senses": [
    {
      "glosses": [
        "ついに。最後に。結局。"
      ],
      "id": "ja-到頭-ja-adv-eVmKHvn0"
    }
  ],
  "word": "到頭"
}

{
  "categories": [
    "日本語",
    "日本語 副詞"
  ],
  "forms": [
    {
      "form": "とうとう"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "adv",
  "pos_title": "副詞",
  "senses": [
    {
      "glosses": [
        "ついに。最後に。結局。"
      ]
    }
  ],
  "word": "到頭"
}