"grease monkey" meaning in English

{
  "etymology_text": "Dates to at least 1928. May have originated during the Industrial Revolution in Great Britain, when children were used to grease the large rotating axles which were used to transfer power from one centralized steam engine to all of the machines on the factory floor. These children, covered in grease and crawling in the tight spaces in the ceilings, were equated with monkeys.",
  "forms": [
    {
      "form": "grease monkeys",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grease monkey (plural grease monkeys)",
      "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 topic categories using raw markup",
          "parents": [
            "Entries with topic 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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Occupations",
          "orig": "en:Occupations",
          "parents": [
            "People",
            "Work",
            "Human",
            "Human activity",
            "All topics",
            "Human behaviour",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "I'm no grease monkey, but I can manage to change out my engine's spark plugs without assistance."
        }
      ],
      "glosses": [
        "A mechanic, often with the specific connotation of an automobile mechanic."
      ],
      "id": "en-grease_monkey-en-noun-bXuXpGd4",
      "links": [
        [
          "mechanic",
          "mechanic"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, slang) A mechanic, often with the specific connotation of an automobile mechanic."
      ],
      "related": [
        {
          "word": "greaser"
        },
        {
          "word": "powder monkey"
        },
        {
          "word": "rigging monkey"
        },
        {
          "word": "code monkey"
        },
        {
          "word": "oil trash"
        },
        {
          "word": "shade tree mechanic"
        }
      ],
      "tags": [
        "idiomatic",
        "slang"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "a mechanic",
          "word": "rasva-apina"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "a mechanic",
          "word": "rasvari"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "a mechanic",
          "tags": [
            "masculine"
          ],
          "word": "mécano"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-grease monkey.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/b/b0/En-au-grease_monkey.ogg/En-au-grease_monkey.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/b/b0/En-au-grease_monkey.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "grease monkey"
}

{
  "etymology_text": "Dates to at least 1928. May have originated during the Industrial Revolution in Great Britain, when children were used to grease the large rotating axles which were used to transfer power from one centralized steam engine to all of the machines on the factory floor. These children, covered in grease and crawling in the tight spaces in the ceilings, were equated with monkeys.",
  "forms": [
    {
      "form": "grease monkeys",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grease monkey (plural grease monkeys)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "greaser"
    },
    {
      "word": "powder monkey"
    },
    {
      "word": "rigging monkey"
    },
    {
      "word": "code monkey"
    },
    {
      "word": "oil trash"
    },
    {
      "word": "shade tree mechanic"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "en:Occupations",
        "en:People"
      ],
      "examples": [
        {
          "text": "I'm no grease monkey, but I can manage to change out my engine's spark plugs without assistance."
        }
      ],
      "glosses": [
        "A mechanic, often with the specific connotation of an automobile mechanic."
      ],
      "links": [
        [
          "mechanic",
          "mechanic"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, slang) A mechanic, often with the specific connotation of an automobile mechanic."
      ],
      "tags": [
        "idiomatic",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-grease monkey.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/b/b0/En-au-grease_monkey.ogg/En-au-grease_monkey.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/b/b0/En-au-grease_monkey.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "a mechanic",
      "word": "rasva-apina"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "a mechanic",
      "word": "rasvari"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "a mechanic",
      "tags": [
        "masculine"
      ],
      "word": "mécano"
    }
  ],
  "word": "grease monkey"
}