"gris de plomb" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Couleurs grises en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions adjectivales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en espagnol",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De gris et plomb."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "adj",
  "pos_title": "Locution adjectivale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en français",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Joseph Kessel, Les Cavaliers, Gallimard, 1967",
          "text": "La pyramide funèbre était gris de plomb et les pierres tombales gris de fer. Autour, ondulaient le sol et le soir, couleur de cendre."
        }
      ],
      "glosses": [
        "Nuance de gris — #798081"
      ],
      "id": "fr-gris_de_plomb-fr-adj-~qzJ3mYi"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡʁi də plɔ̃\\"
    },
    {
      "audio": "LL-Q150 (fra)-Jérémy-Günther-Heinz Jähnick-gris de plomb.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3a/LL-Q150_(fra)-Jérémy-Günther-Heinz_Jähnick-gris_de_plomb.wav/LL-Q150_(fra)-Jérémy-Günther-Heinz_Jähnick-gris_de_plomb.wav.mp3",
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    }
  ],
  "tags": [
    "invariable"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "lead grey"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "lead gray"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "tags": [
        "masculine"
      ],
      "word": "gris plomo"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "tags": [
        "masculine"
      ],
      "word": "plomo"
    },
    {
      "lang": "Russe",
      "lang_code": "ru",
      "roman": "svincovyï",
      "word": "свинцовый"
    }
  ],
  "word": "gris de plomb"
}

{
  "categories": [
    "Couleurs grises en français",
    "Locutions adjectivales en français",
    "Traductions en anglais",
    "Traductions en espagnol",
    "Traductions en russe",
    "français"
  ],
  "etymology_texts": [
    "De gris et plomb."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "adj",
  "pos_title": "Locution adjectivale",
  "senses": [
    {
      "categories": [
        "Exemples en français"
      ],
      "examples": [
        {
          "ref": "Joseph Kessel, Les Cavaliers, Gallimard, 1967",
          "text": "La pyramide funèbre était gris de plomb et les pierres tombales gris de fer. Autour, ondulaient le sol et le soir, couleur de cendre."
        }
      ],
      "glosses": [
        "Nuance de gris — #798081"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡʁi də plɔ̃\\"
    },
    {
      "audio": "LL-Q150 (fra)-Jérémy-Günther-Heinz Jähnick-gris de plomb.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/3a/LL-Q150_(fra)-Jérémy-Günther-Heinz_Jähnick-gris_de_plomb.wav/LL-Q150_(fra)-Jérémy-Günther-Heinz_Jähnick-gris_de_plomb.wav.mp3",
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      "raw_tags": [
        "Somain (France)"
      ],
      "wav_url": "https://commons.wikimedia.org/wiki/Special:FilePath/LL-Q150 (fra)-Jérémy-Günther-Heinz Jähnick-gris de plomb.wav"
    }
  ],
  "tags": [
    "invariable"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "lead grey"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "lead gray"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "tags": [
        "masculine"
      ],
      "word": "gris plomo"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "tags": [
        "masculine"
      ],
      "word": "plomo"
    },
    {
      "lang": "Russe",
      "lang_code": "ru",
      "roman": "svincovyï",
      "word": "свинцовый"
    }
  ],
  "word": "gris de plomb"
}