"mwg" meaning in Gallois

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Gallois",
      "orig": "gallois",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "fwg",
      "raw_tags": [
        "Lénition"
      ],
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en gallois",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Pan losgodd y ffatri deiars i’r llawr, roedd mwg dros yr ardal i gyd.",
          "translation": "Lorsque l’usine de pneus a brûlé, il y avait de la fumée partout dans la zone."
        }
      ],
      "glosses": [
        "Fumée."
      ],
      "id": "fr-mwg-cy-noun-rkpmUuCB"
    }
  ],
  "sounds": [
    {
      "ipa": "\\muːɡ\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "mwg"
}

{
  "categories": [
    "Noms communs en gallois",
    "gallois"
  ],
  "forms": [
    {
      "form": "fwg",
      "raw_tags": [
        "Lénition"
      ],
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Exemples en gallois"
      ],
      "examples": [
        {
          "text": "Pan losgodd y ffatri deiars i’r llawr, roedd mwg dros yr ardal i gyd.",
          "translation": "Lorsque l’usine de pneus a brûlé, il y avait de la fumée partout dans la zone."
        }
      ],
      "glosses": [
        "Fumée."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\muːɡ\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "mwg"
}