"MUA" meaning in Français

{
  "anagrams": [
    {
      "word": "AMU"
    },
    {
      "word": "aum"
    },
    {
      "word": "MAU"
    },
    {
      "word": "UMA"
    },
    {
      "word": "uma"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en français issus d’un mot en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De l'anglais MUA, initiales de Mail User Agent."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "MDA"
    },
    {
      "word": "MTA"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de l’Internet",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Client de messagerie : logiciel qui sert à lire et envoyer des courriers électroniques."
      ],
      "id": "fr-MUA-fr-noun-KN~6AMBu",
      "raw_tags": [
        "Internet"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛm.y.a\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "MUA"
}

{
  "anagrams": [
    {
      "word": "AMU"
    },
    {
      "word": "aum"
    },
    {
      "word": "MAU"
    },
    {
      "word": "UMA"
    },
    {
      "word": "uma"
    }
  ],
  "categories": [
    "Lemmes en français",
    "Mots en français issus d’un mot en anglais",
    "Noms communs en français",
    "français"
  ],
  "etymology_texts": [
    "De l'anglais MUA, initiales de Mail User Agent."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "MDA"
    },
    {
      "word": "MTA"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en français de l’Internet"
      ],
      "glosses": [
        "Client de messagerie : logiciel qui sert à lire et envoyer des courriers électroniques."
      ],
      "raw_tags": [
        "Internet"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛm.y.a\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "MUA"
}