"pencil fever" meaning in English

{
  "etymology_text": "Compare penciler (“a bookmaker”).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pencil fever (uncountable)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Horse racing",
          "orig": "en:Horse racing",
          "parents": [
            "Equestrianism",
            "Horses",
            "Animal riding",
            "Sports",
            "Equids",
            "Livestock",
            "Transport",
            "Human activity",
            "Odd-toed ungulates",
            "Agriculture",
            "Animals",
            "All topics",
            "Human behaviour",
            "Mammals",
            "Applied sciences",
            "Lifeforms",
            "Fundamental",
            "Human",
            "Vertebrates",
            "Sciences",
            "Life",
            "Chordates",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The situation where punters discover that a horse is almost certain to lose, and so become eager to lay bets against it."
      ],
      "id": "en-pencil_fever-en-noun-AOawa5gj",
      "links": [
        [
          "horse racing",
          "horse racing"
        ],
        [
          "punter",
          "punter"
        ],
        [
          "discover",
          "discover"
        ],
        [
          "horse",
          "horse"
        ],
        [
          "lose",
          "lose"
        ],
        [
          "eager",
          "eager"
        ],
        [
          "bet",
          "bet"
        ]
      ],
      "raw_glosses": [
        "(horse racing, slang, obsolete) The situation where punters discover that a horse is almost certain to lose, and so become eager to lay bets against it."
      ],
      "tags": [
        "obsolete",
        "slang",
        "uncountable"
      ],
      "topics": [
        "hobbies",
        "horse-racing",
        "horseracing",
        "horses",
        "lifestyle",
        "pets",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "pencil fever"
}

{
  "etymology_text": "Compare penciler (“a bookmaker”).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pencil fever (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with obsolete senses",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Horse racing"
      ],
      "glosses": [
        "The situation where punters discover that a horse is almost certain to lose, and so become eager to lay bets against it."
      ],
      "links": [
        [
          "horse racing",
          "horse racing"
        ],
        [
          "punter",
          "punter"
        ],
        [
          "discover",
          "discover"
        ],
        [
          "horse",
          "horse"
        ],
        [
          "lose",
          "lose"
        ],
        [
          "eager",
          "eager"
        ],
        [
          "bet",
          "bet"
        ]
      ],
      "raw_glosses": [
        "(horse racing, slang, obsolete) The situation where punters discover that a horse is almost certain to lose, and so become eager to lay bets against it."
      ],
      "tags": [
        "obsolete",
        "slang",
        "uncountable"
      ],
      "topics": [
        "hobbies",
        "horse-racing",
        "horseracing",
        "horses",
        "lifestyle",
        "pets",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "pencil fever"
}