"tä" meaning in Finnish

{
  "etymology_templates": [
    {
      "args": {
        "1": "fi",
        "2": "mitä",
        "3": "",
        "4": "what"
      },
      "expansion": "mitä (“what”)",
      "name": "m"
    }
  ],
  "etymology_text": "Shortened from mitä (“what”).",
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "interjections",
        "head": ""
      },
      "expansion": "tä",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "tä",
      "name": "fi-int"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Finnish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "what? huh? (exclamation used to express stupefaction or failure to understand somebody else's words)"
      ],
      "id": "en-tä-fi-intj-c2QlWeYr",
      "links": [
        [
          "what",
          "what"
        ],
        [
          "huh",
          "huh"
        ]
      ],
      "synonyms": [
        {
          "word": "anteeksi"
        },
        {
          "word": "nyt en ymmärrä"
        },
        {
          "word": "täh"
        }
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈtæ(ˣ)/"
    },
    {
      "ipa": "[ˈt̪æ(ʔ)]"
    },
    {
      "rhymes": "-æ"
    }
  ],
  "word": "tä"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fi",
        "2": "mitä",
        "3": "",
        "4": "what"
      },
      "expansion": "mitä (“what”)",
      "name": "m"
    }
  ],
  "etymology_text": "Shortened from mitä (“what”).",
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "interjections",
        "head": ""
      },
      "expansion": "tä",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "tä",
      "name": "fi-int"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Finnish 1-syllable words",
        "Finnish colloquialisms",
        "Finnish entries with incorrect language header",
        "Finnish interjections",
        "Finnish lemmas",
        "Finnish terms with IPA pronunciation",
        "Rhymes:Finnish/æ",
        "Rhymes:Finnish/æ/1 syllable"
      ],
      "glosses": [
        "what? huh? (exclamation used to express stupefaction or failure to understand somebody else's words)"
      ],
      "links": [
        [
          "what",
          "what"
        ],
        [
          "huh",
          "huh"
        ]
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈtæ(ˣ)/"
    },
    {
      "ipa": "[ˈt̪æ(ʔ)]"
    },
    {
      "rhymes": "-æ"
    }
  ],
  "synonyms": [
    {
      "word": "anteeksi"
    },
    {
      "word": "nyt en ymmärrä"
    },
    {
      "word": "täh"
    }
  ],
  "word": "tä"
}