"издавна" meaning in Russian

{
  "forms": [
    {
      "form": "и́здавна",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ízdavna",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "и́здавна"
      },
      "expansion": "и́здавна • (ízdavna)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Vladimir Odoyevsky",
          "ref": "1843, Владимир Одоевский [Vladimir Odoyevsky], Город без имени; English translation from (Please provide a date or year):",
          "roman": "Jestéstvennaja poetíčeskaja stixíja ízdavna bylá umerščvlená korýstnymi rasčótami pólʹzy.",
          "text": "Есте́ственная поэти́ческая стихи́я и́здавна была́ умерщвлена́ коры́стными расчё́тами по́льзы.",
          "type": "quote"
        }
      ],
      "glosses": [
        "long since; since long ago"
      ],
      "id": "en-издавна-ru-adv-qL9tn41o",
      "links": [
        [
          "long since",
          "long since"
        ]
      ],
      "related": [
        {
          "roman": "davnó",
          "word": "давно́"
        }
      ],
      "synonyms": [
        {
          "word": "и́сстари"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈizdəvnə]"
    }
  ],
  "word": "издавна"
}

{
  "forms": [
    {
      "form": "и́здавна",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ízdavna",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "и́здавна"
      },
      "expansion": "и́здавна • (ízdavna)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "related": [
    {
      "roman": "davnó",
      "word": "давно́"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 2 entries",
        "Pages with entries",
        "Requests for translations of Russian quotations",
        "Russian 3-syllable words",
        "Russian adverbs",
        "Russian entries with incorrect language header",
        "Russian lemmas",
        "Russian terms with IPA pronunciation",
        "Russian terms with quotations"
      ],
      "examples": [
        {
          "english": "Vladimir Odoyevsky",
          "ref": "1843, Владимир Одоевский [Vladimir Odoyevsky], Город без имени; English translation from (Please provide a date or year):",
          "roman": "Jestéstvennaja poetíčeskaja stixíja ízdavna bylá umerščvlená korýstnymi rasčótami pólʹzy.",
          "text": "Есте́ственная поэти́ческая стихи́я и́здавна была́ умерщвлена́ коры́стными расчё́тами по́льзы.",
          "type": "quote"
        }
      ],
      "glosses": [
        "long since; since long ago"
      ],
      "links": [
        [
          "long since",
          "long since"
        ]
      ],
      "synonyms": [
        {
          "word": "и́сстари"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈizdəvnə]"
    }
  ],
  "word": "издавна"
}