"in nothing flat" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "in nothing flat",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "in nothing flat",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "After so many years of practice, she can often find the problem and fix it in nothing flat."
        }
      ],
      "glosses": [
        "A very short (but unspecified) amount of time; no time at all."
      ],
      "id": "en-in_nothing_flat-en-prep_phrase-s~On1-bM",
      "links": [
        [
          "time",
          "time"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) A very short (but unspecified) amount of time; no time at all."
      ],
      "synonyms": [
        {
          "word": "in no time"
        },
        {
          "word": "in no time flat"
        }
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "very short amount of time",
          "word": "en un rien de temps"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "attoiuma",
          "sense": "very short amount of time",
          "word": "あっと言う間"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "very short amount of time",
          "word": "într-o clipă"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "v dva sčóta",
          "sense": "very short amount of time",
          "word": "в два счёта"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-in nothing flat.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/85/En-au-in_nothing_flat.ogg/En-au-in_nothing_flat.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/85/En-au-in_nothing_flat.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "in nothing flat"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "in nothing flat",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "in nothing flat",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with audio links",
        "Japanese terms with redundant script codes"
      ],
      "examples": [
        {
          "text": "After so many years of practice, she can often find the problem and fix it in nothing flat."
        }
      ],
      "glosses": [
        "A very short (but unspecified) amount of time; no time at all."
      ],
      "links": [
        [
          "time",
          "time"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) A very short (but unspecified) amount of time; no time at all."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-in nothing flat.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/85/En-au-in_nothing_flat.ogg/En-au-in_nothing_flat.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/85/En-au-in_nothing_flat.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "synonyms": [
    {
      "word": "in no time"
    },
    {
      "word": "in no time flat"
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "very short amount of time",
      "word": "en un rien de temps"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "attoiuma",
      "sense": "very short amount of time",
      "word": "あっと言う間"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "very short amount of time",
      "word": "într-o clipă"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "v dva sčóta",
      "sense": "very short amount of time",
      "word": "в два счёта"
    }
  ],
  "word": "in nothing flat"
}