"au doigt mouillé" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "nl",
        "2": "nattevingerwerk"
      },
      "expansion": "Dutch nattevingerwerk",
      "name": "cog"
    },
    {
      "args": {
        "1": "en",
        "2": "finger to the wind"
      },
      "expansion": "English finger to the wind",
      "name": "cog"
    }
  ],
  "etymology_text": "A reference to the practise of moistening one's finger and putting it upright to find which way the wind goes approximately. Compare Dutch nattevingerwerk, English finger to the wind.",
  "head_templates": [
    {
      "args": {},
      "expansion": "au doigt mouillé",
      "name": "fr-prep phrase"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "a ballpark estimate",
          "text": "une estimation au doigt mouillé",
          "type": "example"
        }
      ],
      "glosses": [
        "by the seat of one's pants, as a rule of thumb"
      ],
      "id": "en-au_doigt_mouillé-fr-prep_phrase-c4vbo-yS",
      "links": [
        [
          "by the seat of one's pants",
          "by the seat of one's pants"
        ],
        [
          "rule of thumb",
          "rule of thumb"
        ]
      ],
      "raw_glosses": [
        "(informal) by the seat of one's pants, as a rule of thumb"
      ],
      "related": [
        {
          "word": "à la louche"
        },
        {
          "word": "au pif"
        },
        {
          "word": "au petit bonheur"
        },
        {
          "word": "au hasard"
        }
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/o dwa mu.je/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-au doigt mouillé.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/45/LL-Q150_%28fra%29-LoquaxFR-au_doigt_mouill%C3%A9.wav/LL-Q150_%28fra%29-LoquaxFR-au_doigt_mouill%C3%A9.wav.mp3",
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      "text": "Audio"
    }
  ],
  "word": "au doigt mouillé"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "nl",
        "2": "nattevingerwerk"
      },
      "expansion": "Dutch nattevingerwerk",
      "name": "cog"
    },
    {
      "args": {
        "1": "en",
        "2": "finger to the wind"
      },
      "expansion": "English finger to the wind",
      "name": "cog"
    }
  ],
  "etymology_text": "A reference to the practise of moistening one's finger and putting it upright to find which way the wind goes approximately. Compare Dutch nattevingerwerk, English finger to the wind.",
  "head_templates": [
    {
      "args": {},
      "expansion": "au doigt mouillé",
      "name": "fr-prep phrase"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prep_phrase",
  "related": [
    {
      "word": "à la louche"
    },
    {
      "word": "au pif"
    },
    {
      "word": "au petit bonheur"
    },
    {
      "word": "au hasard"
    }
  ],
  "senses": [
    {
      "categories": [
        "French entries with incorrect language header",
        "French informal terms",
        "French lemmas",
        "French multiword terms",
        "French prepositional phrases",
        "French terms with IPA pronunciation",
        "French terms with audio links",
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "a ballpark estimate",
          "text": "une estimation au doigt mouillé",
          "type": "example"
        }
      ],
      "glosses": [
        "by the seat of one's pants, as a rule of thumb"
      ],
      "links": [
        [
          "by the seat of one's pants",
          "by the seat of one's pants"
        ],
        [
          "rule of thumb",
          "rule of thumb"
        ]
      ],
      "raw_glosses": [
        "(informal) by the seat of one's pants, as a rule of thumb"
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/o dwa mu.je/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-au doigt mouillé.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/45/LL-Q150_%28fra%29-LoquaxFR-au_doigt_mouill%C3%A9.wav/LL-Q150_%28fra%29-LoquaxFR-au_doigt_mouill%C3%A9.wav.mp3",
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      "text": "Audio"
    }
  ],
  "word": "au doigt mouillé"
}