"எதற்கு" meaning in Tamil

{
  "forms": [
    {
      "form": "etaṟku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "எதற்கு • (etaṟku)",
      "name": "ta-pronoun"
    }
  ],
  "lang": "Tamil",
  "lang_code": "ta",
  "pos": "pron",
  "senses": [
    {
      "glosses": [
        "why?"
      ],
      "id": "en-எதற்கு-ta-pron-9bK5i~RL",
      "links": [
        [
          "why",
          "why"
        ]
      ],
      "raw_glosses": [
        "(interrogative) why?"
      ],
      "tags": [
        "interrogative"
      ]
    },
    {
      "categories": [
        {
          "_dis": "24 76",
          "kind": "other",
          "name": "Tamil entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "35 65",
          "kind": "other",
          "name": "Tamil pronouns",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "16 84",
          "kind": "other",
          "name": "Tamil terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "extra": "etu",
          "word": "எது"
        }
      ],
      "glosses": [
        "dative singular of எது (etu)"
      ],
      "id": "en-எதற்கு-ta-pron-F5WNQbx2",
      "links": [
        [
          "எது",
          "எது#Tamil"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "singular"
      ]
    }
  ],
  "word": "எதற்கு"
}

{
  "categories": [
    "Tamil entries with incorrect language header",
    "Tamil lemmas",
    "Tamil pronouns",
    "Tamil terms with redundant script codes"
  ],
  "forms": [
    {
      "form": "etaṟku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "எதற்கு • (etaṟku)",
      "name": "ta-pronoun"
    }
  ],
  "lang": "Tamil",
  "lang_code": "ta",
  "pos": "pron",
  "senses": [
    {
      "glosses": [
        "why?"
      ],
      "links": [
        [
          "why",
          "why"
        ]
      ],
      "raw_glosses": [
        "(interrogative) why?"
      ],
      "tags": [
        "interrogative"
      ]
    },
    {
      "form_of": [
        {
          "extra": "etu",
          "word": "எது"
        }
      ],
      "glosses": [
        "dative singular of எது (etu)"
      ],
      "links": [
        [
          "எது",
          "எது#Tamil"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "singular"
      ]
    }
  ],
  "word": "எதற்கு"
}