"Robertson screwdriver" meaning in English

{
  "etymology_text": "From Canadian inventor P. L. Robertson (1879-1951).",
  "forms": [
    {
      "form": "Robertson screwdrivers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Robertson screwdriver (plural Robertson screwdrivers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "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 language name categories using raw markup",
          "parents": [
            "Entries with language name 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"
        }
      ],
      "examples": [
        {
          "ref": "1963, Alonzo Wass, Building construction estimating",
          "text": "The Robertson-head screw has a square hole in the head, made in three different sizes, and must be driven with a special Robertson screwdriver.",
          "type": "quotation"
        },
        {
          "ref": "2002, Mark Kearney, Randy Ray, I Know that Name!: The People Behind Canada's Best-known Brand Names from Elizabeth Arden to Walter Zeller",
          "text": "The Robertson screwdriver is among the tools found at hardware stores and building supply outlets across Canada.",
          "type": "quotation"
        },
        {
          "ref": "2007, William S. Peckham, Michael C. Hammar, Never Hang Wallpaper With Your Wife: Decorating and Renovating From a Guy's Point Of View",
          "text": "Robertson screwdrivers have colour-coded handles, to make it easy to determine which size you will require.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A type of screwdriver having a square tip, designed to drive a Robertson screw."
      ],
      "id": "en-Robertson_screwdriver-en-noun-LKIY7zHR",
      "links": [
        [
          "square",
          "square"
        ],
        [
          "tip",
          "tip"
        ],
        [
          "Robertson screw",
          "Robertson screw"
        ]
      ],
      "raw_glosses": [
        "(chiefly Canada) A type of screwdriver having a square tip, designed to drive a Robertson screw."
      ],
      "related": [
        {
          "word": "Robertson screw"
        }
      ],
      "tags": [
        "Canada"
      ],
      "wikipedia": [
        "Robertson screwdriver"
      ]
    }
  ],
  "word": "Robertson screwdriver"
}

{
  "etymology_text": "From Canadian inventor P. L. Robertson (1879-1951).",
  "forms": [
    {
      "form": "Robertson screwdrivers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Robertson screwdriver (plural Robertson screwdrivers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Robertson screw"
    }
  ],
  "senses": [
    {
      "categories": [
        "Canadian English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1963, Alonzo Wass, Building construction estimating",
          "text": "The Robertson-head screw has a square hole in the head, made in three different sizes, and must be driven with a special Robertson screwdriver.",
          "type": "quotation"
        },
        {
          "ref": "2002, Mark Kearney, Randy Ray, I Know that Name!: The People Behind Canada's Best-known Brand Names from Elizabeth Arden to Walter Zeller",
          "text": "The Robertson screwdriver is among the tools found at hardware stores and building supply outlets across Canada.",
          "type": "quotation"
        },
        {
          "ref": "2007, William S. Peckham, Michael C. Hammar, Never Hang Wallpaper With Your Wife: Decorating and Renovating From a Guy's Point Of View",
          "text": "Robertson screwdrivers have colour-coded handles, to make it easy to determine which size you will require.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A type of screwdriver having a square tip, designed to drive a Robertson screw."
      ],
      "links": [
        [
          "square",
          "square"
        ],
        [
          "tip",
          "tip"
        ],
        [
          "Robertson screw",
          "Robertson screw"
        ]
      ],
      "raw_glosses": [
        "(chiefly Canada) A type of screwdriver having a square tip, designed to drive a Robertson screw."
      ],
      "tags": [
        "Canada"
      ],
      "wikipedia": [
        "Robertson screwdriver"
      ]
    }
  ],
  "word": "Robertson screwdriver"
}