"fly low" meaning in English

{
  "forms": [
    {
      "form": "flies low",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "flying low",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "flew low",
      "tags": [
        "past"
      ]
    },
    {
      "form": "flown low",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "fly<,,flew,flown> low"
      },
      "expansion": "fly low (third-person singular simple present flies low, present participle flying low, simple past flew low, past participle flown low)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [],
      "glosses": [
        "to have one's fly (zipper) undone."
      ],
      "id": "en-fly_low-en-verb-tGFvwHx1",
      "links": [
        [
          "fly",
          "fly"
        ],
        [
          "zipper",
          "zipper"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) to have one's fly (zipper) undone."
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "_dis1": "92 8",
          "code": "fi",
          "lang": "Finnish",
          "sense": "to have one's fly undone",
          "tags": [
            "phrase"
          ],
          "word": "hevoset karkaa"
        },
        {
          "_dis1": "92 8",
          "code": "sv",
          "lang": "Swedish",
          "sense": "to have one's fly undone",
          "word": "att gå på tjejkalas"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "10 90",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "to fly under the radar; to act in a discreet or sneaky fashion"
      ],
      "id": "en-fly_low-en-verb-jAofRn3j",
      "links": [
        [
          "fly under the radar",
          "fly under the radar"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) to fly under the radar; to act in a discreet or sneaky fashion"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-fly low.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3a/En-au-fly_low.ogg/En-au-fly_low.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/3a/En-au-fly_low.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "fly low"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English terms with audio links",
    "English verbs"
  ],
  "forms": [
    {
      "form": "flies low",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "flying low",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "flew low",
      "tags": [
        "past"
      ]
    },
    {
      "form": "flown low",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "fly<,,flew,flown> low"
      },
      "expansion": "fly low (third-person singular simple present flies low, present participle flying low, simple past flew low, past participle flown low)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English idioms"
      ],
      "glosses": [
        "to have one's fly (zipper) undone."
      ],
      "links": [
        [
          "fly",
          "fly"
        ],
        [
          "zipper",
          "zipper"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) to have one's fly (zipper) undone."
      ],
      "tags": [
        "idiomatic"
      ]
    },
    {
      "categories": [
        "English idioms"
      ],
      "glosses": [
        "to fly under the radar; to act in a discreet or sneaky fashion"
      ],
      "links": [
        [
          "fly under the radar",
          "fly under the radar"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) to fly under the radar; to act in a discreet or sneaky fashion"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-fly low.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3a/En-au-fly_low.ogg/En-au-fly_low.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/3a/En-au-fly_low.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "to have one's fly undone",
      "tags": [
        "phrase"
      ],
      "word": "hevoset karkaa"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "to have one's fly undone",
      "word": "att gå på tjejkalas"
    }
  ],
  "word": "fly low"
}