"gearhead" meaning in English

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  "etymology_text": "gear + head",
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      "form": "gearheads",
      "tags": [
        "plural"
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        {
          "ref": "2007 December 17, “Animatics buys UK’s Harmonic Linear Drive”, in Drives & Controls, UK",
          "text": "HLD has developed a linear belt actuator that circulates the belt in an unusual way, resulting in a gearing reduction of up to 40:1 without a gearhead.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A mechanical device used to increase the torque of gears."
      ],
      "id": "en-gearhead-en-noun--jzvVz~M",
      "links": [
        [
          "mechanical",
          "mechanical"
        ],
        [
          "torque",
          "torque"
        ],
        [
          "gear",
          "gear"
        ]
      ]
    }
  ],
  "word": "gearhead"
}

{
  "etymology_number": 2,
  "etymology_templates": [
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        "2": "gear",
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    }
  ],
  "etymology_text": "gear + -head",
  "forms": [
    {
      "form": "gearheads",
      "tags": [
        "plural"
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  "pos": "noun",
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      "examples": [
        {
          "text": "2000, \"Ford Harley-Davidson Truck Rumbles Onto Web to Benefit Charities,\" PickupTruck.com (US), retrieved 23 Dec/07,\nA self-proclaimed gearhead, Leno loves fast Fords and hot Harley-Davidson motorcycles."
        }
      ],
      "glosses": [
        "An enthusiast for new technology, or for motoring."
      ],
      "id": "en-gearhead-en-noun-9vTaPIel",
      "links": [
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          "enthusiast",
          "enthusiast"
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        [
          "technology",
          "technology"
        ],
        [
          "motoring",
          "motoring"
        ]
      ],
      "raw_glosses": [
        "(informal) An enthusiast for new technology, or for motoring."
      ],
      "related": [
        {
          "word": "motorhead"
        }
      ],
      "synonyms": [
        {
          "sense": "car enthusiast",
          "word": "petrolhead"
        }
      ],
      "tags": [
        "informal"
      ],
      "translations": [
        {
          "code": "et",
          "lang": "Estonian",
          "sense": "Translations",
          "word": "tehnikahuviline"
        },
        {
          "code": "et",
          "english": "cars",
          "lang": "Estonian",
          "sense": "Translations",
          "word": "autohuviline"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "Technikfreak"
        },
        {
          "code": "de",
          "english": "cars",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "Autonarr"
        },
        {
          "alt": "くるまオタク",
          "code": "ja",
          "lang": "Japanese",
          "roman": "kuruma otaku",
          "sense": "Translations",
          "word": "車オタク"
        },
        {
          "alt": "じどうしゃマニア",
          "code": "ja",
          "lang": "Japanese",
          "roman": "jidōsha mania",
          "sense": "Translations",
          "word": "自動車マニア"
        }
      ]
    }
  ],
  "word": "gearhead"
}

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        "2": "gear",
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      "name": "compound"
    }
  ],
  "etymology_text": "gear + head",
  "forms": [
    {
      "form": "gearheads",
      "tags": [
        "plural"
      ]
    }
  ],
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  "pos": "noun",
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          "text": "HLD has developed a linear belt actuator that circulates the belt in an unusual way, resulting in a gearing reduction of up to 40:1 without a gearhead.",
          "type": "quotation"
        }
      ],
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        "A mechanical device used to increase the torque of gears."
      ],
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          "mechanical",
          "mechanical"
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          "torque",
          "torque"
        ],
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          "gear",
          "gear"
        ]
      ]
    }
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  "word": "gearhead"
}

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  ],
  "etymology_text": "gear + -head",
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      "form": "gearheads",
      "tags": [
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  "pos": "noun",
  "related": [
    {
      "word": "motorhead"
    }
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      "examples": [
        {
          "text": "2000, \"Ford Harley-Davidson Truck Rumbles Onto Web to Benefit Charities,\" PickupTruck.com (US), retrieved 23 Dec/07,\nA self-proclaimed gearhead, Leno loves fast Fords and hot Harley-Davidson motorcycles."
        }
      ],
      "glosses": [
        "An enthusiast for new technology, or for motoring."
      ],
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        [
          "enthusiast",
          "enthusiast"
        ],
        [
          "technology",
          "technology"
        ],
        [
          "motoring",
          "motoring"
        ]
      ],
      "raw_glosses": [
        "(informal) An enthusiast for new technology, or for motoring."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "car enthusiast",
      "word": "petrolhead"
    }
  ],
  "translations": [
    {
      "code": "et",
      "lang": "Estonian",
      "sense": "Translations",
      "word": "tehnikahuviline"
    },
    {
      "code": "et",
      "english": "cars",
      "lang": "Estonian",
      "sense": "Translations",
      "word": "autohuviline"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "Technikfreak"
    },
    {
      "code": "de",
      "english": "cars",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "Autonarr"
    },
    {
      "alt": "くるまオタク",
      "code": "ja",
      "lang": "Japanese",
      "roman": "kuruma otaku",
      "sense": "Translations",
      "word": "車オタク"
    },
    {
      "alt": "じどうしゃマニア",
      "code": "ja",
      "lang": "Japanese",
      "roman": "jidōsha mania",
      "sense": "Translations",
      "word": "自動車マニア"
    }
  ],
  "word": "gearhead"
}