"derrickhand" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "derrick",
        "3": "hand"
      },
      "expansion": "derrick + hand",
      "name": "compound"
    }
  ],
  "etymology_text": "derrick + hand",
  "forms": [
    {
      "form": "derrickhands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "derrickhand (plural derrickhands)",
      "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": "topical",
          "langcode": "en",
          "name": "Occupations",
          "orig": "en:Occupations",
          "parents": [
            "People",
            "Work",
            "Human",
            "Human activity",
            "All topics",
            "Human behaviour",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A worker on an oil rig, working on a raised platform from which they guide instruments in and out of the well."
      ],
      "id": "en-derrickhand-en-noun-Pja-xPov",
      "links": [
        [
          "worker",
          "worker"
        ],
        [
          "oil rig",
          "oil rig"
        ],
        [
          "platform",
          "platform"
        ],
        [
          "well",
          "well"
        ]
      ]
    }
  ],
  "word": "derrickhand"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "derrick",
        "3": "hand"
      },
      "expansion": "derrick + hand",
      "name": "compound"
    }
  ],
  "etymology_text": "derrick + hand",
  "forms": [
    {
      "form": "derrickhands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "derrickhand (plural derrickhands)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "en:Occupations"
      ],
      "glosses": [
        "A worker on an oil rig, working on a raised platform from which they guide instruments in and out of the well."
      ],
      "links": [
        [
          "worker",
          "worker"
        ],
        [
          "oil rig",
          "oil rig"
        ],
        [
          "platform",
          "platform"
        ],
        [
          "well",
          "well"
        ]
      ]
    }
  ],
  "word": "derrickhand"
}