"авалтан" meaning in Chuvash

{
  "etymology_text": "Ablative of авал (aval).",
  "forms": [
    {
      "form": "avalt̬an",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cv",
        "2": "adverb"
      },
      "expansion": "авалтан • (avalt̬an)",
      "name": "head"
    }
  ],
  "lang": "Chuvash",
  "lang_code": "cv",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Chuvash entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "The Chuvash have lived on the Volga from time immemorial.",
          "roman": "Čăvašsem avalt̬an At̬ăl ś̬inč̬e p̬urănaśśĕ.",
          "text": "Чӑвашсем авалтан Атӑл ҫинче пурӑнаҫҫӗ.",
          "type": "example"
        }
      ],
      "glosses": [
        "since long ago, from time immemorial"
      ],
      "id": "en-авалтан-cv-adv-iqUa8GyX",
      "links": [
        [
          "long",
          "long"
        ],
        [
          "ago",
          "ago"
        ],
        [
          "time immemorial",
          "time immemorial"
        ]
      ]
    }
  ],
  "word": "авалтан"
}

{
  "etymology_text": "Ablative of авал (aval).",
  "forms": [
    {
      "form": "avalt̬an",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cv",
        "2": "adverb"
      },
      "expansion": "авалтан • (avalt̬an)",
      "name": "head"
    }
  ],
  "lang": "Chuvash",
  "lang_code": "cv",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Chuvash adverbs",
        "Chuvash entries with incorrect language header",
        "Chuvash lemmas",
        "Chuvash terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "The Chuvash have lived on the Volga from time immemorial.",
          "roman": "Čăvašsem avalt̬an At̬ăl ś̬inč̬e p̬urănaśśĕ.",
          "text": "Чӑвашсем авалтан Атӑл ҫинче пурӑнаҫҫӗ.",
          "type": "example"
        }
      ],
      "glosses": [
        "since long ago, from time immemorial"
      ],
      "links": [
        [
          "long",
          "long"
        ],
        [
          "ago",
          "ago"
        ],
        [
          "time immemorial",
          "time immemorial"
        ]
      ]
    }
  ],
  "word": "авалтан"
}