"rotary switch" meaning in English

{
  "forms": [
    {
      "form": "rotary switches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "es"
      },
      "expansion": "rotary switch (plural rotary switches)",
      "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": "Electrical engineering",
          "orig": "en:Electrical engineering",
          "parents": [
            "Electricity",
            "Engineering",
            "Electromagnetism",
            "Applied sciences",
            "Technology",
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1961 October, “More programme machines for L.T. Northern line”, in Trains Illustrated, page 625, photo caption",
          "text": "A close-up of the very compact desk unit for control of the East Finchley programme machine from Leicester Square; the rotary switches at the top are used to set up the train number of any service to be added or cancelled.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A switch that is operated by turning a knob."
      ],
      "id": "en-rotary_switch-en-noun-fPnlyri3",
      "links": [
        [
          "electrical engineering",
          "electrical engineering"
        ],
        [
          "knob",
          "knob"
        ]
      ],
      "raw_glosses": [
        "(electrical engineering) A switch that is operated by turning a knob."
      ],
      "topics": [
        "business",
        "electrical",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "rotary switch"
}

{
  "forms": [
    {
      "form": "rotary switches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "es"
      },
      "expansion": "rotary switch (plural rotary switches)",
      "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",
        "English terms with quotations",
        "en:Electrical engineering"
      ],
      "examples": [
        {
          "ref": "1961 October, “More programme machines for L.T. Northern line”, in Trains Illustrated, page 625, photo caption",
          "text": "A close-up of the very compact desk unit for control of the East Finchley programme machine from Leicester Square; the rotary switches at the top are used to set up the train number of any service to be added or cancelled.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A switch that is operated by turning a knob."
      ],
      "links": [
        [
          "electrical engineering",
          "electrical engineering"
        ],
        [
          "knob",
          "knob"
        ]
      ],
      "raw_glosses": [
        "(electrical engineering) A switch that is operated by turning a knob."
      ],
      "topics": [
        "business",
        "electrical",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "rotary switch"
}