"talon d'Achille" meaning in French

{
  "forms": [
    {
      "form": "talon d’ Achille",
      "tags": [
        "canonical",
        "masculine"
      ]
    },
    {
      "form": "talons d’Achille",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "talon d’Achille m (plural talons d’Achille)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "point fort"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Greek mythology",
          "orig": "fr:Greek mythology",
          "parents": [
            "Ancient Greece",
            "Mythology",
            "Ancient Europe",
            "Ancient Near East",
            "History of Greece",
            "Culture",
            "Ancient history",
            "History of Europe",
            "Ancient Asia",
            "Greece",
            "History of Asia",
            "Society",
            "History",
            "Europe",
            "Asia",
            "All topics",
            "Earth",
            "Eurasia",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Achilles heel"
      ],
      "id": "en-talon_d'Achille-fr-noun-BeMZdmd5",
      "links": [
        [
          "Achilles heel",
          "Achilles heel"
        ]
      ],
      "synonyms": [
        {
          "word": "tendon d'Achille"
        },
        {
          "word": "point faible"
        },
        {
          "word": "ventre mou"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ta.lɔ̃ d‿a.ʃil/"
    }
  ],
  "word": "talon d'Achille"
}

{
  "forms": [
    {
      "form": "talon d’ Achille",
      "tags": [
        "canonical",
        "masculine"
      ]
    },
    {
      "form": "talons d’Achille",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "talon d’Achille m (plural talons d’Achille)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "point fort"
        }
      ],
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms derived from Greek mythology",
        "French terms with IPA pronunciation",
        "fr:Greek mythology"
      ],
      "glosses": [
        "Achilles heel"
      ],
      "links": [
        [
          "Achilles heel",
          "Achilles heel"
        ]
      ],
      "synonyms": [
        {
          "word": "tendon d'Achille"
        },
        {
          "word": "point faible"
        },
        {
          "word": "ventre mou"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ta.lɔ̃ d‿a.ʃil/"
    }
  ],
  "word": "talon d'Achille"
}