"fils unique" meaning in Français

{
  "antonyms": [
    {
      "word": "frère"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Lexique en français de la famille",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en croate",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en espagnol",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "fils uniques",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "fille unique",
      "source": "form line template 'équiv-pour'",
      "tags": [
        "feminine"
      ]
    }
  ],
  "hypernyms": [
    {
      "word": "enfant unique"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en français",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Garçon ou homme qui n’a ni frère ni sœur."
      ],
      "id": "fr-fils_unique-fr-noun-amUoQ7Ds"
    }
  ],
  "sounds": [
    {
      "ipa": "\\fi.s‿y.nik\\"
    },
    {
      "audio": "LL-Q150 (fra)-WikiLucas00-fils unique.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/36/LL-Q150_(fra)-WikiLucas00-fils_unique.wav/LL-Q150_(fra)-WikiLucas00-fils_unique.wav.mp3",
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      "raw_tags": [
        "France (Lyon)"
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      "wav_url": "https://commons.wikimedia.org/wiki/Special:FilePath/LL-Q150 (fra)-WikiLucas00-fils unique.wav"
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  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "only child"
    },
    {
      "lang": "Croate",
      "lang_code": "hr",
      "word": "jedinac"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "tags": [
        "masculine"
      ],
      "word": "hijo único"
    },
    {
      "lang": "Grec ancien",
      "lang_code": "grc",
      "roman": "monogenès",
      "tags": [
        "masculine"
      ],
      "word": "μονογένης"
    },
    {
      "lang": "Italien",
      "lang_code": "it",
      "tags": [
        "masculine"
      ],
      "word": "figlio unico"
    },
    {
      "lang": "Japonais",
      "lang_code": "ja",
      "roman": "hitorimusuko",
      "word": "一人息子"
    }
  ],
  "word": "fils unique"
}

{
  "antonyms": [
    {
      "word": "frère"
    }
  ],
  "categories": [
    "Lexique en français de la famille",
    "Locutions nominales en français",
    "Traductions en anglais",
    "Traductions en croate",
    "Traductions en espagnol",
    "Traductions en grec ancien",
    "Traductions en italien",
    "Traductions en japonais",
    "français"
  ],
  "forms": [
    {
      "form": "fils uniques",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "fille unique",
      "source": "form line template 'équiv-pour'",
      "tags": [
        "feminine"
      ]
    }
  ],
  "hypernyms": [
    {
      "word": "enfant unique"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en français"
      ],
      "glosses": [
        "Garçon ou homme qui n’a ni frère ni sœur."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\fi.s‿y.nik\\"
    },
    {
      "audio": "LL-Q150 (fra)-WikiLucas00-fils unique.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/36/LL-Q150_(fra)-WikiLucas00-fils_unique.wav/LL-Q150_(fra)-WikiLucas00-fils_unique.wav.mp3",
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      "raw_tags": [
        "France (Lyon)"
      ],
      "wav_url": "https://commons.wikimedia.org/wiki/Special:FilePath/LL-Q150 (fra)-WikiLucas00-fils unique.wav"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "only child"
    },
    {
      "lang": "Croate",
      "lang_code": "hr",
      "word": "jedinac"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "tags": [
        "masculine"
      ],
      "word": "hijo único"
    },
    {
      "lang": "Grec ancien",
      "lang_code": "grc",
      "roman": "monogenès",
      "tags": [
        "masculine"
      ],
      "word": "μονογένης"
    },
    {
      "lang": "Italien",
      "lang_code": "it",
      "tags": [
        "masculine"
      ],
      "word": "figlio unico"
    },
    {
      "lang": "Japonais",
      "lang_code": "ja",
      "roman": "hitorimusuko",
      "word": "一人息子"
    }
  ],
  "word": "fils unique"
}