"coûter la peau des fesses" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "to cost the skin off 􂀿my􂁀 buttocks"
      },
      "expansion": "“to cost the skin off [my] buttocks”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "to cost the skin off 􂀿my􂁀 buttocks"
      },
      "expansion": "Literally, “to cost the skin off [my] buttocks”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “to cost the skin off [my] buttocks”.",
  "head_templates": [
    {
      "args": {},
      "expansion": "coûter la peau des fesses",
      "name": "fr-verb"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "to be expensive, cost an arm and a leg"
      ],
      "id": "en-coûter_la_peau_des_fesses-fr-verb-7cYfydhc",
      "links": [
        [
          "expensive",
          "expensive"
        ],
        [
          "arm and a leg",
          "arm and a leg"
        ]
      ],
      "raw_glosses": [
        "(informal) to be expensive, cost an arm and a leg"
      ],
      "synonyms": [
        {
          "word": "coûter un pont"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter un bras"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter la peau du cul"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter la peau du dos"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter les yeux de la tête"
        }
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ku.te la po de fɛs/"
    },
    {
      "audio": "LL-Q150 (fra)-Benoît Prieur-coûter la peau des fesses.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2f/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2f/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav.ogg"
    }
  ],
  "word": "coûter la peau des fesses"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "to cost the skin off 􂀿my􂁀 buttocks"
      },
      "expansion": "“to cost the skin off [my] buttocks”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "to cost the skin off 􂀿my􂁀 buttocks"
      },
      "expansion": "Literally, “to cost the skin off [my] buttocks”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “to cost the skin off [my] buttocks”.",
  "head_templates": [
    {
      "args": {},
      "expansion": "coûter la peau des fesses",
      "name": "fr-verb"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "French entries with incorrect language header",
        "French informal terms",
        "French lemmas",
        "French multiword terms",
        "French terms with IPA pronunciation",
        "French verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "to be expensive, cost an arm and a leg"
      ],
      "links": [
        [
          "expensive",
          "expensive"
        ],
        [
          "arm and a leg",
          "arm and a leg"
        ]
      ],
      "raw_glosses": [
        "(informal) to be expensive, cost an arm and a leg"
      ],
      "synonyms": [
        {
          "word": "coûter un pont"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter un bras"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter la peau du cul"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter la peau du dos"
        },
        {
          "word": ";"
        },
        {
          "word": "coûter les yeux de la tête"
        }
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ku.te la po de fɛs/"
    },
    {
      "audio": "LL-Q150 (fra)-Benoît Prieur-coûter la peau des fesses.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2f/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2f/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav/LL-Q150_%28fra%29-Beno%C3%AEt_Prieur-co%C3%BBter_la_peau_des_fesses.wav.ogg"
    }
  ],
  "word": "coûter la peau des fesses"
}