"mal de chien" meaning in French

{
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "mal de chien m (uncountable)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 100",
      "word": "malade comme un chien"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "76 24",
          "kind": "topical",
          "langcode": "fr",
          "name": "Pain",
          "orig": "fr:Pain",
          "parents": [
            "Medical signs and symptoms",
            "Perception",
            "Health",
            "Medicine",
            "Body",
            "Biology",
            "Healthcare",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "This sprain hurts like hell; I hope it gets better.",
          "text": "Cette entorse me fait un mal de chien, j’espère que ça va passer.",
          "type": "example"
        }
      ],
      "glosses": [
        "great pain"
      ],
      "id": "en-mal_de_chien-fr-noun-fmfAapEB",
      "raw_glosses": [
        "(colloquial) great pain"
      ],
      "tags": [
        "colloquial",
        "masculine",
        "uncountable"
      ]
    },
    {
      "categories": [
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "I had a hell of a job finding that book, so don't lose it!",
          "text": "J’ai eu un mal de chien à trouver ce livre, donc ne le perds pas!",
          "type": "example"
        }
      ],
      "glosses": [
        "great difficulty"
      ],
      "id": "en-mal_de_chien-fr-noun-tNyP5br9",
      "raw_glosses": [
        "(colloquial) great difficulty"
      ],
      "tags": [
        "colloquial",
        "masculine",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mal də ʃjɛ̃/"
    }
  ],
  "word": "mal de chien"
}

{
  "categories": [
    "French entries with incorrect language header",
    "French lemmas",
    "French masculine nouns",
    "French multiword terms",
    "French nouns",
    "French terms with IPA pronunciation",
    "French uncountable nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "fr:Pain"
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "mal de chien m (uncountable)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "related": [
    {
      "word": "malade comme un chien"
    }
  ],
  "senses": [
    {
      "categories": [
        "French colloquialisms",
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "This sprain hurts like hell; I hope it gets better.",
          "text": "Cette entorse me fait un mal de chien, j’espère que ça va passer.",
          "type": "example"
        }
      ],
      "glosses": [
        "great pain"
      ],
      "raw_glosses": [
        "(colloquial) great pain"
      ],
      "tags": [
        "colloquial",
        "masculine",
        "uncountable"
      ]
    },
    {
      "categories": [
        "French colloquialisms",
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "I had a hell of a job finding that book, so don't lose it!",
          "text": "J’ai eu un mal de chien à trouver ce livre, donc ne le perds pas!",
          "type": "example"
        }
      ],
      "glosses": [
        "great difficulty"
      ],
      "raw_glosses": [
        "(colloquial) great difficulty"
      ],
      "tags": [
        "colloquial",
        "masculine",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mal də ʃjɛ̃/"
    }
  ],
  "word": "mal de chien"
}