"๑๘" meaning in Thai

{
  "head_templates": [
    {
      "args": {
        "1": "th",
        "2": "numeral symbol"
      },
      "expansion": "๑๘",
      "name": "head"
    }
  ],
  "lang": "Thai",
  "lang_code": "th",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Thai entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Thai numeral symbols",
          "parents": [
            "Numeral symbols",
            "Symbols",
            "Letters, symbols, and punctuation",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Thai terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "roman": "sìp-bpɛ̀ɛt",
          "word": "สิบแปด"
        },
        {
          "sense": "Previous",
          "word": "๑๗"
        },
        {
          "sense": "Next",
          "word": "๑๙"
        }
      ],
      "glosses": [
        "18 (eighteen)."
      ],
      "id": "en-๑๘-th-num-3sqOyqqq",
      "links": [
        [
          "18",
          "18"
        ],
        [
          "eighteen",
          "eighteen"
        ]
      ]
    }
  ],
  "word": "๑๘"
}

{
  "coordinate_terms": [
    {
      "roman": "sìp-bpɛ̀ɛt",
      "word": "สิบแปด"
    },
    {
      "sense": "Previous",
      "word": "๑๗"
    },
    {
      "sense": "Next",
      "word": "๑๙"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "th",
        "2": "numeral symbol"
      },
      "expansion": "๑๘",
      "name": "head"
    }
  ],
  "lang": "Thai",
  "lang_code": "th",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Thai entries with incorrect language header",
        "Thai lemmas",
        "Thai numeral symbols",
        "Thai terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "18 (eighteen)."
      ],
      "links": [
        [
          "18",
          "18"
        ],
        [
          "eighteen",
          "eighteen"
        ]
      ]
    }
  ],
  "word": "๑๘"
}

{
  "called_from": "linkages/674",
  "msg": "parenthesized number but there is no sense with such index: 17",
  "path": [
    "๑๘"
  ],
  "section": "Thai",
  "subsection": "numeral",
  "title": "๑๘",
  "trace": ""
}

{
  "called_from": "linkages/674",
  "msg": "parenthesized number but there is no sense with such index: 19",
  "path": [
    "๑๘"
  ],
  "section": "Thai",
  "subsection": "numeral",
  "title": "๑๘",
  "trace": ""
}