"Pas-de-Calais" meaning in French

{
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      "args": {
        "1": "fr",
        "2": "pas",
        "3": "de",
        "4": "Calais",
        "t1": "pass, strait",
        "t2": "of"
      },
      "expansion": "pas (“pass, strait”) + de (“of”) + Calais",
      "name": "af"
    }
  ],
  "etymology_text": "From Pas de Calais (“Dover Strait”), itself from pas (“pass, strait”) + de (“of”) + Calais.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "head": "Pas-de-Calais"
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      "expansion": "Pas-de-Calais m",
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  "lang_code": "fr",
  "pos": "name",
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          "kind": "place",
          "langcode": "fr",
          "name": "Departments of France",
          "orig": "fr:Departments of France",
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            "Places",
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          "source": "w"
        },
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          "kind": "place",
          "langcode": "fr",
          "name": "Places in France",
          "orig": "fr:Places in France",
          "parents": [
            "Places",
            "Names",
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            "Proper nouns",
            "Terms by semantic function",
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        },
        {
          "kind": "place",
          "langcode": "fr",
          "name": "Places in Hauts-de-France",
          "orig": "fr:Places in Hauts-de-France",
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          "source": "w"
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      ],
      "derived": [
        {
          "word": "Nord-Pas-de-Calais"
        }
      ],
      "glosses": [
        "Pas-de-Calais (a department of Hauts-de-France, France)"
      ],
      "id": "en-Pas-de-Calais-fr-name-nOaFhe~d",
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        [
          "Pas-de-Calais",
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          "department",
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          "Hauts-de-France",
          "Hauts-de-France#English"
        ],
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          "France",
          "France#English"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pa.d(ə).ka.lɛ/"
    },
    {
      "ipa": "/pɑ.d(ə).ka.lɛ/"
    },
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      "audio": "Fr-Paris--Pas-de-Calais.ogg",
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  "word": "Pas-de-Calais"
}

{
  "derived": [
    {
      "word": "Nord-Pas-de-Calais"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "pas",
        "3": "de",
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        "t1": "pass, strait",
        "t2": "of"
      },
      "expansion": "pas (“pass, strait”) + de (“of”) + Calais",
      "name": "af"
    }
  ],
  "etymology_text": "From Pas de Calais (“Dover Strait”), itself from pas (“pass, strait”) + de (“of”) + Calais.",
  "head_templates": [
    {
      "args": {
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        "head": "Pas-de-Calais"
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  "lang_code": "fr",
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        "fr:Places in Hauts-de-France"
      ],
      "glosses": [
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      ],
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  ],
  "sounds": [
    {
      "ipa": "/pa.d(ə).ka.lɛ/"
    },
    {
      "ipa": "/pɑ.d(ə).ka.lɛ/"
    },
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      "audio": "Fr-Paris--Pas-de-Calais.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Fr-Paris--Pas-de-Calais.ogg/Fr-Paris--Pas-de-Calais.ogg.mp3",
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}