"dolly grip" meaning in English

{
  "forms": [
    {
      "form": "dolly grips",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dolly grip (plural dolly grips)",
      "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": "Film",
          "orig": "en:Film",
          "parents": [
            "Entertainment",
            "Mass media",
            "Culture",
            "Media",
            "Society",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "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 technician trained to use a dolly."
      ],
      "id": "en-dolly_grip-en-noun-Mgeu9yT7",
      "links": [
        [
          "film",
          "film#Noun"
        ],
        [
          "technician",
          "technician"
        ],
        [
          "dolly",
          "dolly"
        ]
      ],
      "raw_glosses": [
        "(film) A technician trained to use a dolly."
      ],
      "topics": [
        "broadcasting",
        "film",
        "media",
        "television"
      ],
      "translations": [
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "dólʹščik",
          "sense": "camera dolly operator",
          "tags": [
            "masculine"
          ],
          "word": "до́льщик"
        }
      ]
    }
  ],
  "word": "dolly grip"
}

{
  "forms": [
    {
      "form": "dolly grips",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dolly grip (plural dolly grips)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Film",
        "en:Occupations"
      ],
      "glosses": [
        "A technician trained to use a dolly."
      ],
      "links": [
        [
          "film",
          "film#Noun"
        ],
        [
          "technician",
          "technician"
        ],
        [
          "dolly",
          "dolly"
        ]
      ],
      "raw_glosses": [
        "(film) A technician trained to use a dolly."
      ],
      "topics": [
        "broadcasting",
        "film",
        "media",
        "television"
      ]
    }
  ],
  "translations": [
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "dólʹščik",
      "sense": "camera dolly operator",
      "tags": [
        "masculine"
      ],
      "word": "до́льщик"
    }
  ],
  "word": "dolly grip"
}