"аан бастаан" meaning in Yakut

{
  "forms": [
    {
      "form": "aan bastaan",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sah",
        "2": "phrase"
      },
      "expansion": "аан бастаан • (aan bastaan)",
      "name": "head"
    }
  ],
  "lang": "Yakut",
  "lang_code": "sah",
  "pos": "adv_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Yakut entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "for the first time"
      ],
      "id": "en-аан_бастаан-sah-adv_phrase-7ZaOseEB"
    }
  ],
  "word": "аан бастаан"
}

{
  "forms": [
    {
      "form": "aan bastaan",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sah",
        "2": "phrase"
      },
      "expansion": "аан бастаан • (aan bastaan)",
      "name": "head"
    }
  ],
  "lang": "Yakut",
  "lang_code": "sah",
  "pos": "adv_phrase",
  "senses": [
    {
      "categories": [
        "Yakut entries with incorrect language header",
        "Yakut lemmas",
        "Yakut multiword terms",
        "Yakut phrases"
      ],
      "glosses": [
        "for the first time"
      ]
    }
  ],
  "word": "аан бастаан"
}