"เอกสารชั้นรอง" meaning in Thai

{
  "etymology_templates": [
    {
      "args": {
        "1": "th",
        "2": "เอกสาร",
        "3": "ชั้น",
        "4": "รอง",
        "t1": "document",
        "t2": "level, step",
        "t3": "secondary"
      },
      "expansion": "เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + รอง (rɔɔng, “secondary”)",
      "name": "com"
    }
  ],
  "etymology_text": "From เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + รอง (rɔɔng, “secondary”).",
  "forms": [
    {
      "form": "èek-gà-sǎan-chán-rɔɔng",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ชิ้น",
      "tags": [
        "classifier"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ชิ้น"
      },
      "expansion": "เอกสารชั้นรอง • (èek-gà-sǎan-chán-rɔɔng) (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": [
        "secondary source."
      ],
      "id": "en-เอกสารชั้นรอง-th-noun-kiN5ALS~",
      "links": [
        [
          "secondary source",
          "secondary source"
        ]
      ],
      "related": [
        {
          "word": "หลักฐานชั้นต้น"
        },
        {
          "word": "หลักฐานปฐมภูมิ"
        },
        {
          "roman": "èek-gà-sǎan-chán-dtôn",
          "word": "เอกสารชั้นต้น"
        }
      ],
      "synonyms": [
        {
          "word": "หลักฐานชั้นรอง"
        },
        {
          "word": "หลักฐานทุติยภูมิ"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔeːk̚˨˩.ka˨˩.saːn˩˩˦.t͡ɕʰan˦˥.rɔːŋ˧/",
      "tags": [
        "standard"
      ]
    }
  ],
  "word": "เอกสารชั้นรอง"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "th",
        "2": "เอกสาร",
        "3": "ชั้น",
        "4": "รอง",
        "t1": "document",
        "t2": "level, step",
        "t3": "secondary"
      },
      "expansion": "เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + รอง (rɔɔng, “secondary”)",
      "name": "com"
    }
  ],
  "etymology_text": "From เอกสาร (èek-gà-sǎan, “document”) + ชั้น (chán, “level, step”) + รอง (rɔɔng, “secondary”).",
  "forms": [
    {
      "form": "èek-gà-sǎan-chán-rɔɔng",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ชิ้น",
      "tags": [
        "classifier"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ชิ้น"
      },
      "expansion": "เอกสารชั้นรอง • (èek-gà-sǎan-chán-rɔɔng) (classifier ชิ้น)",
      "name": "th-noun"
    }
  ],
  "lang": "Thai",
  "lang_code": "th",
  "pos": "noun",
  "related": [
    {
      "word": "หลักฐานชั้นต้น"
    },
    {
      "word": "หลักฐานปฐมภูมิ"
    },
    {
      "roman": "èek-gà-sǎan-chán-dtôn",
      "word": "เอกสารชั้นต้น"
    }
  ],
  "senses": [
    {
      "categories": [
        "Rhymes:Thai/ɔːŋ",
        "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": [
        "secondary source."
      ],
      "links": [
        [
          "secondary source",
          "secondary source"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔeːk̚˨˩.ka˨˩.saːn˩˩˦.t͡ɕʰan˦˥.rɔːŋ˧/",
      "tags": [
        "standard"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "หลักฐานชั้นรอง"
    },
    {
      "word": "หลักฐานทุติยภูมิ"
    }
  ],
  "word": "เอกสารชั้นรอง"
}

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

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

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