"have a fit" meaning in English

{
  "forms": [
    {
      "form": "has a fit",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "having a fit",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "had a fit",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "had a fit",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "have<has,,had> a fit"
      },
      "expansion": "have a fit (third-person singular simple present has a fit, present participle having a fit, simple past and past participle had a fit)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "text": "She needs to keep her sugar level low or she'll have a fit.",
          "type": "example"
        }
      ],
      "glosses": [
        "To experience an epileptic seizure."
      ],
      "id": "en-have_a_fit-en-verb-8XI5qqsV",
      "links": [
        [
          "epileptic",
          "epileptic"
        ],
        [
          "seizure",
          "seizure"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To experience an epileptic seizure."
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "_dis1": "97 3",
          "code": "mi",
          "lang": "Maori",
          "sense": "to have an epileptic seizure",
          "word": "hūkeke"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "She'll have a fit when she finds out a younger woman got the job she was hoping for.",
          "type": "example"
        }
      ],
      "glosses": [
        "To become suddenly enraged."
      ],
      "id": "en-have_a_fit-en-verb-WTmGuS-q",
      "links": [
        [
          "enrage",
          "enrage"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To become suddenly enraged."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-have a fit.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/9c/En-au-have_a_fit.ogg/En-au-have_a_fit.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/9c/En-au-have_a_fit.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "have a fit"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English terms with audio links",
    "English verbs"
  ],
  "forms": [
    {
      "form": "has a fit",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "having a fit",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "had a fit",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "had a fit",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "have<has,,had> a fit"
      },
      "expansion": "have a fit (third-person singular simple present has a fit, present participle having a fit, simple past and past participle had a fit)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English idioms",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "She needs to keep her sugar level low or she'll have a fit.",
          "type": "example"
        }
      ],
      "glosses": [
        "To experience an epileptic seizure."
      ],
      "links": [
        [
          "epileptic",
          "epileptic"
        ],
        [
          "seizure",
          "seizure"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To experience an epileptic seizure."
      ],
      "tags": [
        "idiomatic"
      ]
    },
    {
      "categories": [
        "English idioms",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "She'll have a fit when she finds out a younger woman got the job she was hoping for.",
          "type": "example"
        }
      ],
      "glosses": [
        "To become suddenly enraged."
      ],
      "links": [
        [
          "enrage",
          "enrage"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To become suddenly enraged."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-have a fit.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/9c/En-au-have_a_fit.ogg/En-au-have_a_fit.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/9c/En-au-have_a_fit.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "mi",
      "lang": "Maori",
      "sense": "to have an epileptic seizure",
      "word": "hūkeke"
    }
  ],
  "word": "have a fit"
}