"flash over" meaning in English

{
  "forms": [
    {
      "form": "flashes over",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "flashing over",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "flashed over",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "flashed over",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "flash over (third-person singular simple present flashes over, present participle flashing over, simple past and past participle flashed over)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "To undergo flashing (ignition) throughout a space all at once."
      ],
      "id": "en-flash_over-en-verb-flgDEEab",
      "links": [
        [
          "flashing",
          "flashing#Noun"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "24 76",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "30 70",
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "22 78",
          "kind": "other",
          "name": "English phrasal verbs with particle (over)",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "28 72",
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "42 58",
          "kind": "topical",
          "langcode": "en",
          "name": "Firefighting",
          "orig": "en:Firefighting",
          "parents": [
            "Emergency services",
            "Fire",
            "Public safety",
            "Combustion",
            "Light sources",
            "Public administration",
            "Security",
            "Chemical processes",
            "Light",
            "Government",
            "Society",
            "Nature",
            "Energy",
            "Politics",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "_dis1": "40 60",
          "tags": [
            "noun"
          ],
          "word": "flashover"
        }
      ],
      "glosses": [
        "To undergo an unintended electric discharge or arc over or around an insulator."
      ],
      "id": "en-flash_over-en-verb-j2OcscfW",
      "links": [
        [
          "electric",
          "electric"
        ],
        [
          "discharge",
          "discharge"
        ],
        [
          "arc",
          "arc"
        ],
        [
          "insulator",
          "insulator"
        ]
      ]
    }
  ],
  "word": "flash over"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English entries with topic categories using raw markup",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs with particle (over)",
    "English terms with non-redundant non-automated sortkeys",
    "English verbs",
    "en:Firefighting"
  ],
  "derived": [
    {
      "tags": [
        "noun"
      ],
      "word": "flashover"
    }
  ],
  "forms": [
    {
      "form": "flashes over",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "flashing over",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "flashed over",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "flashed over",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "flash over (third-person singular simple present flashes over, present participle flashing over, simple past and past participle flashed over)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "To undergo flashing (ignition) throughout a space all at once."
      ],
      "links": [
        [
          "flashing",
          "flashing#Noun"
        ]
      ]
    },
    {
      "glosses": [
        "To undergo an unintended electric discharge or arc over or around an insulator."
      ],
      "links": [
        [
          "electric",
          "electric"
        ],
        [
          "discharge",
          "discharge"
        ],
        [
          "arc",
          "arc"
        ],
        [
          "insulator",
          "insulator"
        ]
      ]
    }
  ],
  "word": "flash over"
}