"тьфу" meaning in Russian

{
  "derived": [
    {
      "_dis1": "0 0",
      "roman": "tʹfú-tʹfú-tʹfú",
      "word": "тьфу́-тьфу́-тьфу́"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ru"
      },
      "expansion": "Onomatopoeic",
      "name": "onomatopoeic"
    }
  ],
  "etymology_text": "Onomatopoeic, mimics the sound of spitting.",
  "forms": [
    {
      "form": "tʹfu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "interjection",
        "head": "тьфу"
      },
      "expansion": "тьфу • (tʹfu)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "ru",
          "name": "Sounds",
          "orig": "ru:Sounds",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Mimics the sound of spitting."
      ],
      "id": "en-тьфу-ru-intj-cFEgSnb3"
    },
    {
      "categories": [
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "6 94",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "8 92",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Russian onomatopoeias",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "fie!; for shame!; nuts!; damn it!, dammit! (expresses strong disgust or disappointment)"
      ],
      "id": "en-тьфу-ru-intj-MGFTlzua",
      "links": [
        [
          "fie",
          "fie"
        ],
        [
          "for shame",
          "for shame"
        ],
        [
          "nuts",
          "nuts"
        ],
        [
          "damn it",
          "damn"
        ],
        [
          "dammit",
          "dammit"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tʲfu]"
    },
    {
      "audio": "Ru-тьфу.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3b/Ru-%D1%82%D1%8C%D1%84%D1%83.ogg/Ru-%D1%82%D1%8C%D1%84%D1%83.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/3b/Ru-%D1%82%D1%8C%D1%84%D1%83.ogg"
    },
    {
      "ipa": "[tfu]"
    }
  ],
  "word": "тьфу"
}

{
  "categories": [
    "Pages with 2 entries",
    "Pages with entries",
    "Russian 1-syllable words",
    "Russian entries with incorrect language header",
    "Russian interjections",
    "Russian lemmas",
    "Russian onomatopoeias",
    "Russian terms with IPA pronunciation",
    "Russian terms with redundant head parameter"
  ],
  "derived": [
    {
      "roman": "tʹfú-tʹfú-tʹfú",
      "word": "тьфу́-тьфу́-тьфу́"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ru"
      },
      "expansion": "Onomatopoeic",
      "name": "onomatopoeic"
    }
  ],
  "etymology_text": "Onomatopoeic, mimics the sound of spitting.",
  "forms": [
    {
      "form": "tʹfu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "interjection",
        "head": "тьфу"
      },
      "expansion": "тьфу • (tʹfu)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "ru:Sounds"
      ],
      "glosses": [
        "Mimics the sound of spitting."
      ]
    },
    {
      "glosses": [
        "fie!; for shame!; nuts!; damn it!, dammit! (expresses strong disgust or disappointment)"
      ],
      "links": [
        [
          "fie",
          "fie"
        ],
        [
          "for shame",
          "for shame"
        ],
        [
          "nuts",
          "nuts"
        ],
        [
          "damn it",
          "damn"
        ],
        [
          "dammit",
          "dammit"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tʲfu]"
    },
    {
      "audio": "Ru-тьфу.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3b/Ru-%D1%82%D1%8C%D1%84%D1%83.ogg/Ru-%D1%82%D1%8C%D1%84%D1%83.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/3b/Ru-%D1%82%D1%8C%D1%84%D1%83.ogg"
    },
    {
      "ipa": "[tfu]"
    }
  ],
  "word": "тьфу"
}