"fourth gear" meaning in English

{
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      "args": {
        "1": "fr",
        "2": "en quatrième vitesse"
      },
      "expansion": "French en quatrième vitesse",
      "name": "cog"
    }
  ],
  "etymology_text": "The figurative sense reflects that in some times and places, fourth gear was the highest gear that a car could achieve; compare French en quatrième vitesse.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "fourth gear (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      ],
      "glosses": [
        "The fourth of the available gears in a transmission or other gearbox."
      ],
      "id": "en-fourth_gear-en-noun-h5nG-8Yj",
      "links": [
        [
          "gear",
          "gear"
        ],
        [
          "transmission",
          "transmission"
        ],
        [
          "gearbox",
          "gearbox"
        ]
      ],
      "related": [
        {
          "_dis1": "89 11",
          "word": "downshift"
        },
        {
          "_dis1": "89 11",
          "word": "upshift"
        }
      ],
      "synonyms": [
        {
          "word": "fourth#Noun[Appendix:Glossary#ellipsis|elliptical]]>"
        }
      ],
      "tags": [
        "uncountable"
      ]
    },
    {
      "categories": [
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      "examples": [
        {
          "ref": "2009, Madhu Jain, The Kapoors: The First Family of Indian Cinema, page 243:",
          "text": "During the seventies, Shashi Kapoor went into fourth gear in Bollywood, while Merchant and Ivory made a slew of films, many of which were not set in India.",
          "type": "quote"
        },
        {
          "ref": "2014, Paul Monette, The Gold Diggers: A Novel:",
          "text": "After all, he did the very same thing, pool and lunch, every Friday afternoon for five months—Friday perfect because it gave his cock a rest before the weekend, when it went into fourth gear.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A maximal level of effort."
      ],
      "id": "en-fourth_gear-en-noun-30SrPWWq",
      "raw_glosses": [
        "(idiomatic, dated) A maximal level of effort."
      ],
      "synonyms": [
        {
          "word": "top gear"
        },
        {
          "word": "overdrive"
        },
        {
          "word": ";"
        },
        {
          "word": "full throttle"
        }
      ],
      "tags": [
        "dated",
        "idiomatic",
        "uncountable"
      ]
    }
  ],
  "word": "fourth gear"
}

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  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "en quatrième vitesse"
      },
      "expansion": "French en quatrième vitesse",
      "name": "cog"
    }
  ],
  "etymology_text": "The figurative sense reflects that in some times and places, fourth gear was the highest gear that a car could achieve; compare French en quatrième vitesse.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "fourth gear (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "downshift"
    },
    {
      "word": "upshift"
    }
  ],
  "senses": [
    {
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      "glosses": [
        "The fourth of the available gears in a transmission or other gearbox."
      ],
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        [
          "gear",
          "gear"
        ],
        [
          "transmission",
          "transmission"
        ],
        [
          "gearbox",
          "gearbox"
        ]
      ],
      "synonyms": [
        {
          "word": "fourth#Noun[Appendix:Glossary#ellipsis|elliptical]]>"
        }
      ],
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        "uncountable"
      ]
    },
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      "categories": [
        "English dated terms",
        "English idioms",
        "English terms with quotations",
        "Quotation templates to be cleaned"
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      "examples": [
        {
          "ref": "2009, Madhu Jain, The Kapoors: The First Family of Indian Cinema, page 243:",
          "text": "During the seventies, Shashi Kapoor went into fourth gear in Bollywood, while Merchant and Ivory made a slew of films, many of which were not set in India.",
          "type": "quote"
        },
        {
          "ref": "2014, Paul Monette, The Gold Diggers: A Novel:",
          "text": "After all, he did the very same thing, pool and lunch, every Friday afternoon for five months—Friday perfect because it gave his cock a rest before the weekend, when it went into fourth gear.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A maximal level of effort."
      ],
      "raw_glosses": [
        "(idiomatic, dated) A maximal level of effort."
      ],
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        {
          "word": "top gear"
        },
        {
          "word": "overdrive"
        },
        {
          "word": ";"
        },
        {
          "word": "full throttle"
        }
      ],
      "tags": [
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        "idiomatic",
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  "word": "fourth gear"
}