"เอกสารชั้นต้น" meaning in Thai

{
  "etymology_templates": [
    {
      "args": {
        "1": "th",
        "2": "เอกสาร",
        "3": "ชั้น",
        "4": "ต้น",
        "t1": "document",
        "t2": "level, step",
        "t3": "primary"
      },
      "expansion": "เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + ต้น (dtôn, “primary”)",
      "name": "com"
    }
  ],
  "etymology_text": "From เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + ต้น (dtôn, “primary”).",
  "forms": [
    {
      "form": "èek-gà-sǎan-chán-dtôn",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ชิ้น",
      "tags": [
        "classifier"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ชิ้น"
      },
      "expansion": "เอกสารชั้นต้น • (èek-gà-sǎan-chán-dtôn) (classifier ชิ้น)",
      "name": "th-noun"
    }
  ],
  "lang": "Thai",
  "lang_code": "th",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Thai entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Thai nouns classified by ชิ้น",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Thai terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "primary source."
      ],
      "id": "en-เอกสารชั้นต้น-th-noun-c9USeQ0K",
      "links": [
        [
          "primary source",
          "primary source"
        ]
      ],
      "related": [
        {
          "word": "หลักฐานชั้นรอง"
        },
        {
          "word": "หลักฐานทุติยภูมิ"
        },
        {
          "roman": "èek-gà-sǎan-chán-rɔɔng",
          "word": "เอกสารชั้นรอง"
        }
      ],
      "synonyms": [
        {
          "word": "หลักฐานชั้นต้น"
        },
        {
          "word": "หลักฐานปฐมภูมิ"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔeːk̚˨˩.ka˨˩.saːn˩˩˦.t͡ɕʰan˦˥.ton˥˩/",
      "tags": [
        "standard"
      ]
    }
  ],
  "word": "เอกสารชั้นต้น"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "th",
        "2": "เอกสาร",
        "3": "ชั้น",
        "4": "ต้น",
        "t1": "document",
        "t2": "level, step",
        "t3": "primary"
      },
      "expansion": "เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + ต้น (dtôn, “primary”)",
      "name": "com"
    }
  ],
  "etymology_text": "From เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + ต้น (dtôn, “primary”).",
  "forms": [
    {
      "form": "èek-gà-sǎan-chán-dtôn",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ชิ้น",
      "tags": [
        "classifier"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ชิ้น"
      },
      "expansion": "เอกสารชั้นต้น • (èek-gà-sǎan-chán-dtôn) (classifier ชิ้น)",
      "name": "th-noun"
    }
  ],
  "lang": "Thai",
  "lang_code": "th",
  "pos": "noun",
  "related": [
    {
      "word": "หลักฐานชั้นรอง"
    },
    {
      "word": "หลักฐานทุติยภูมิ"
    },
    {
      "roman": "èek-gà-sǎan-chán-rɔɔng",
      "word": "เอกสารชั้นรอง"
    }
  ],
  "senses": [
    {
      "categories": [
        "Rhymes:Thai/on",
        "Thai 5-syllable words",
        "Thai compound terms",
        "Thai entries with incorrect language header",
        "Thai lemmas",
        "Thai nouns",
        "Thai nouns classified by ชิ้น",
        "Thai terms with IPA pronunciation",
        "Thai terms with redundant script codes"
      ],
      "glosses": [
        "primary source."
      ],
      "links": [
        [
          "primary source",
          "primary source"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔeːk̚˨˩.ka˨˩.saːn˩˩˦.t͡ɕʰan˦˥.ton˥˩/",
      "tags": [
        "standard"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "หลักฐานชั้นต้น"
    },
    {
      "word": "หลักฐานปฐมภูมิ"
    }
  ],
  "word": "เอกสารชั้นต้น"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <table> not properly closed",
  "path": [
    "เอกสารชั้นต้น"
  ],
  "section": "Thai",
  "subsection": "",
  "title": "เอกสารชั้นต้น",
  "trace": "started on line 1, detected on line 4"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </tr>",
  "path": [
    "เอกสารชั้นต้น"
  ],
  "section": "Thai",
  "subsection": "",
  "title": "เอกสารชั้นต้น",
  "trace": ""
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </table>",
  "path": [
    "เอกสารชั้นต้น"
  ],
  "section": "Thai",
  "subsection": "",
  "title": "เอกสารชั้นต้น",
  "trace": ""
}