"retombées de suie" meaning in French

{
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "noun"
      },
      "expansion": "retombées de suie",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "id": "en-retombées_de_suie-fr-noun-47DEQpj8",
      "tags": [
        "no-gloss"
      ]
    }
  ],
  "sounds": [
    {
      "other": "/ʁə.tɔ̃.be də sɥi/"
    }
  ],
  "word": "retombées de suie"
}

{
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "noun"
      },
      "expansion": "retombées de suie",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French entries with incorrect language header",
        "French lemmas",
        "French multiword terms",
        "French nouns",
        "French terms with IPA pronunciation",
        "Pages with 1 entry"
      ],
      "tags": [
        "no-gloss"
      ]
    }
  ],
  "sounds": [
    {
      "other": "/ʁə.tɔ̃.be də sɥi/"
    }
  ],
  "word": "retombées de suie"
}