"dat" meaning in Turkish

{
  "head_templates": [
    {
      "args": {
        "1": "tr",
        "2": "noun"
      },
      "expansion": "dat",
      "name": "head"
    }
  ],
  "lang": "Turkish",
  "lang_code": "tr",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "dad"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 27 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Turkish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of dad"
      ],
      "id": "en-dat-tr-noun-dokuJnmT",
      "links": [
        [
          "dad",
          "dad#Turkish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "dat"
}

{
  "categories": [
    "Pages with 27 entries",
    "Pages with entries",
    "West Frisian conjunctions",
    "West Frisian determiner forms",
    "West Frisian entries with incorrect language header",
    "West Frisian lemmas",
    "West Frisian non-lemma forms",
    "West Frisian pronouns"
  ],
  "head_templates": [
    {
      "args": {
        "1": "tr",
        "2": "noun"
      },
      "expansion": "dat",
      "name": "head"
    }
  ],
  "lang": "Turkish",
  "lang_code": "tr",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "dad"
        }
      ],
      "categories": [
        "Pages with 27 entries",
        "Pages with entries",
        "Turkish entries with incorrect language header",
        "Turkish lemmas",
        "Turkish nouns"
      ],
      "glosses": [
        "Alternative form of dad"
      ],
      "links": [
        [
          "dad",
          "dad#Turkish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "dat"
}