"pitch darkness" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pitch-dark",
        "3": "-ness"
      },
      "expansion": "pitch-dark + -ness",
      "name": "af"
    }
  ],
  "etymology_text": "From pitch-dark + -ness.",
  "head_templates": [
    {
      "args": {
        "1": "-"
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      "expansion": "pitch darkness (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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        {
          "kind": "other",
          "name": "English terms suffixed with -ness",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1944 November and December, A Former Pupil, “Some Memories of Crewe Works—II”, in Railway Magazine, page 342",
          "text": "To go through this experience in bitter winter weather and stumble along the line in the pitch darkness at 6 o'clock in the morning, into an icy-cold foundry, as was the writer's experience, was not too good.",
          "type": "quotation"
        },
        {
          "ref": "2020 March 25, Steve Roberts, “Parly-vous?”, in RAIL, page 69",
          "text": "The trip is interesting, but hard to describe in pitch darkness.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Intense darkness with no light whatsoever."
      ],
      "id": "en-pitch_darkness-en-noun-5usfAlUa",
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "pitch darkness"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pitch-dark",
        "3": "-ness"
      },
      "expansion": "pitch-dark + -ness",
      "name": "af"
    }
  ],
  "etymology_text": "From pitch-dark + -ness.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pitch darkness (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English entries with incorrect language header",
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        "English multiword terms",
        "English nouns",
        "English terms suffixed with -ness",
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      "examples": [
        {
          "ref": "1944 November and December, A Former Pupil, “Some Memories of Crewe Works—II”, in Railway Magazine, page 342",
          "text": "To go through this experience in bitter winter weather and stumble along the line in the pitch darkness at 6 o'clock in the morning, into an icy-cold foundry, as was the writer's experience, was not too good.",
          "type": "quotation"
        },
        {
          "ref": "2020 March 25, Steve Roberts, “Parly-vous?”, in RAIL, page 69",
          "text": "The trip is interesting, but hard to describe in pitch darkness.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Intense darkness with no light whatsoever."
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "pitch darkness"
}