"ندر" meaning in Ottoman Turkish

{
  "forms": [
    {
      "form": "nedir",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ota",
        "2": "pronoun",
        "tr": "nedir"
      },
      "expansion": "ندر • (nedir)",
      "name": "head"
    }
  ],
  "lang": "Ottoman Turkish",
  "lang_code": "ota",
  "pos": "pron",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "what is it?",
          "word": "نهدر"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Ottoman Turkish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ottoman Turkish pronouns",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Contraction of نهدر (“what is it?”)."
      ],
      "id": "en-ندر-ota-pron-f~aUItBf",
      "links": [
        [
          "نهدر",
          "نهدر#Ottoman_Turkish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "contraction"
      ]
    }
  ],
  "word": "ندر"
}

{
  "forms": [
    {
      "form": "nedir",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ota",
        "2": "pronoun",
        "tr": "nedir"
      },
      "expansion": "ندر • (nedir)",
      "name": "head"
    }
  ],
  "lang": "Ottoman Turkish",
  "lang_code": "ota",
  "pos": "pron",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "what is it?",
          "word": "نهدر"
        }
      ],
      "categories": [
        "Ottoman Turkish contractions",
        "Ottoman Turkish entries with incorrect language header",
        "Ottoman Turkish lemmas",
        "Ottoman Turkish pronouns",
        "Pages with 3 entries",
        "Pages with entries"
      ],
      "glosses": [
        "Contraction of نهدر (“what is it?”)."
      ],
      "links": [
        [
          "نهدر",
          "نهدر#Ottoman_Turkish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "contraction"
      ]
    }
  ],
  "word": "ندر"
}