"Johnson hole" meaning in English

{
  "etymology_text": "Named, for its size, after Jack Johnson (1878-1946), the world heavyweight boxing champion until 1915.",
  "forms": [
    {
      "form": "Johnson holes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Johnson hole (plural Johnson holes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1937, David Jones, In Parenthesis, Part 3",
          "text": "And to his immediate front, below the shelving ramp, a circular calm water graced the deep of a Johnson hole […]"
        },
        {
          "ref": "2005, Gordon Williams, British Theatre in the Great War, page 196",
          "text": "A running joke is the supposed general who has fallen into a Johnson hole, and Bert's anxiety about whether he should ‘let him drift or fish 'im out’.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A large shell crater during the First World War."
      ],
      "id": "en-Johnson_hole-en-noun-qvnF5rfh",
      "links": [
        [
          "military",
          "military"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "shell",
          "shell"
        ],
        [
          "First World War",
          "First World War"
        ]
      ],
      "raw_glosses": [
        "(military slang, now historical) A large shell crater during the First World War."
      ],
      "synonyms": [
        {
          "word": "Jack Johnson hole"
        }
      ],
      "tags": [
        "historical",
        "slang"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ],
      "wikipedia": [
        "Jack Johnson"
      ]
    }
  ],
  "word": "Johnson hole"
}

{
  "etymology_text": "Named, for its size, after Jack Johnson (1878-1946), the world heavyweight boxing champion until 1915.",
  "forms": [
    {
      "form": "Johnson holes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Johnson hole (plural Johnson holes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English military slang",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1937, David Jones, In Parenthesis, Part 3",
          "text": "And to his immediate front, below the shelving ramp, a circular calm water graced the deep of a Johnson hole […]"
        },
        {
          "ref": "2005, Gordon Williams, British Theatre in the Great War, page 196",
          "text": "A running joke is the supposed general who has fallen into a Johnson hole, and Bert's anxiety about whether he should ‘let him drift or fish 'im out’.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A large shell crater during the First World War."
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "shell",
          "shell"
        ],
        [
          "First World War",
          "First World War"
        ]
      ],
      "raw_glosses": [
        "(military slang, now historical) A large shell crater during the First World War."
      ],
      "tags": [
        "historical",
        "slang"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ],
      "wikipedia": [
        "Jack Johnson"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Jack Johnson hole"
    }
  ],
  "word": "Johnson hole"
}