"ok" meaning in Ido

{
  "etymology_templates": [
    {
      "args": {
        "1": "io",
        "2": "eo",
        "3": "ok"
      },
      "expansion": "Esperanto ok",
      "name": "der"
    },
    {
      "args": {
        "1": "io",
        "2": "la",
        "3": "octo"
      },
      "expansion": "Latin octo",
      "name": "der"
    },
    {
      "args": {
        "1": "io",
        "2": "ine-pro",
        "3": "*oḱtṓw"
      },
      "expansion": "Proto-Indo-European *oḱtṓw",
      "name": "der"
    }
  ],
  "etymology_text": "From Esperanto ok, from Latin octo, ultimately from Proto-Indo-European *oḱtṓw.",
  "head_templates": [
    {
      "args": {
        "1": "io",
        "2": "numeral"
      },
      "expansion": "ok",
      "name": "head"
    }
  ],
  "lang": "Ido",
  "lang_code": "io",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Ido cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ido entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "eight (8)"
      ],
      "id": "en-ok-io-num-9yF0tsQy",
      "links": [
        [
          "eight",
          "eight"
        ]
      ]
    }
  ],
  "word": "ok"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "io",
        "2": "eo",
        "3": "ok"
      },
      "expansion": "Esperanto ok",
      "name": "der"
    },
    {
      "args": {
        "1": "io",
        "2": "la",
        "3": "octo"
      },
      "expansion": "Latin octo",
      "name": "der"
    },
    {
      "args": {
        "1": "io",
        "2": "ine-pro",
        "3": "*oḱtṓw"
      },
      "expansion": "Proto-Indo-European *oḱtṓw",
      "name": "der"
    }
  ],
  "etymology_text": "From Esperanto ok, from Latin octo, ultimately from Proto-Indo-European *oḱtṓw.",
  "head_templates": [
    {
      "args": {
        "1": "io",
        "2": "numeral"
      },
      "expansion": "ok",
      "name": "head"
    }
  ],
  "lang": "Ido",
  "lang_code": "io",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Ido cardinal numbers",
        "Ido entries with incorrect language header",
        "Ido lemmas",
        "Ido numerals",
        "Ido terms derived from Esperanto",
        "Ido terms derived from Latin",
        "Ido terms derived from Proto-Indo-European"
      ],
      "glosses": [
        "eight (8)"
      ],
      "links": [
        [
          "eight",
          "eight"
        ]
      ]
    }
  ],
  "word": "ok"
}