"linchpin" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en moyen anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en anglais issus d’un mot en moyen anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en anglais issus d’un mot en vieil anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(XVᵉ siècle) Du moyen anglais lynspin, composé de lyns (« cheville ») et de pin (« épingle »), du vieil anglais lynis (« cheville »)."
  ],
  "forms": [
    {
      "form": "linchpins",
      "ipas": [
        "\\ˈlɪntʃˌpɪnz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "tags": [
        "rare"
      ],
      "word": "lynchpin"
    },
    {
      "word": "lynch-pin"
    },
    {
      "word": "lynch pin"
    },
    {
      "word": "linch pin"
    },
    {
      "word": "linch-pin"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais de la technique",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Cheville, cheville ouvrière, esse (d’essieu)."
      ],
      "id": "fr-linchpin-en-noun-~qA3CX8C",
      "topics": [
        "technical"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Métaphores en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "He’s the linchpin of the heist. — Il est la clé du cambriolage."
        },
        {
          "text": "Assessment is the linchpin of the whole educational system. — L’évaluation est l’élément essentiel de l'ensemble du système éducatif."
        }
      ],
      "glosses": [
        "Pivot, pilier, élément central, axe central."
      ],
      "id": "fr-linchpin-en-noun--NuWo2vY",
      "tags": [
        "figuratively"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈlɪntʃˌpɪn\\"
    }
  ],
  "synonyms": [
    {
      "word": "backbone"
    },
    {
      "word": "keystone"
    }
  ],
  "word": "linchpin"
}

{
  "categories": [
    "Compositions en moyen anglais",
    "Lemmes en anglais",
    "Mots en anglais issus d’un mot en moyen anglais",
    "Mots en anglais issus d’un mot en vieil anglais",
    "Noms communs en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "(XVᵉ siècle) Du moyen anglais lynspin, composé de lyns (« cheville ») et de pin (« épingle »), du vieil anglais lynis (« cheville »)."
  ],
  "forms": [
    {
      "form": "linchpins",
      "ipas": [
        "\\ˈlɪntʃˌpɪnz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "tags": [
        "rare"
      ],
      "word": "lynchpin"
    },
    {
      "word": "lynch-pin"
    },
    {
      "word": "lynch pin"
    },
    {
      "word": "linch pin"
    },
    {
      "word": "linch-pin"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en anglais de la technique"
      ],
      "glosses": [
        "Cheville, cheville ouvrière, esse (d’essieu)."
      ],
      "topics": [
        "technical"
      ]
    },
    {
      "categories": [
        "Métaphores en anglais"
      ],
      "examples": [
        {
          "text": "He’s the linchpin of the heist. — Il est la clé du cambriolage."
        },
        {
          "text": "Assessment is the linchpin of the whole educational system. — L’évaluation est l’élément essentiel de l'ensemble du système éducatif."
        }
      ],
      "glosses": [
        "Pivot, pilier, élément central, axe central."
      ],
      "tags": [
        "figuratively"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈlɪntʃˌpɪn\\"
    }
  ],
  "synonyms": [
    {
      "word": "backbone"
    },
    {
      "word": "keystone"
    }
  ],
  "word": "linchpin"
}