"two-speed" meaning in English

{
  "head_templates": [
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      "args": {
        "1": "-"
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      "expansion": "two-speed (not comparable)",
      "name": "en-adj"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
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      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
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      "examples": [
        {
          "bold_text_offsets": [
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              2,
              11
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          "text": "a two-speed transmission",
          "type": "example"
        },
        {
          "bold_text_offsets": [
            [
              4,
              13
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          ],
          "ref": "1958 June 3, “Main-Line Diesel-Electric Locomotives for the Eastern Region”, in Railway Magazine, page 394:",
          "text": "The two-speed exhausters are mounted one in each nose-end compartment and create vacuum for operating the train brakes.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Having two different speed settings."
      ],
      "id": "en-two-speed-en-adj-ajs~Fgez",
      "links": [
        [
          "setting",
          "setting"
        ]
      ],
      "related": [
        {
          "word": "four-speed"
        },
        {
          "word": "single-speed bicycle"
        },
        {
          "word": "ten-speed"
        },
        {
          "word": "twelve-speed"
        },
        {
          "word": "two-speed crossword"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "two-speed"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "two-speed (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "four-speed"
    },
    {
      "word": "single-speed bicycle"
    },
    {
      "word": "ten-speed"
    },
    {
      "word": "twelve-speed"
    },
    {
      "word": "two-speed crossword"
    }
  ],
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        "English uncomparable adjectives",
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      "examples": [
        {
          "bold_text_offsets": [
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          "text": "a two-speed transmission",
          "type": "example"
        },
        {
          "bold_text_offsets": [
            [
              4,
              13
            ]
          ],
          "ref": "1958 June 3, “Main-Line Diesel-Electric Locomotives for the Eastern Region”, in Railway Magazine, page 394:",
          "text": "The two-speed exhausters are mounted one in each nose-end compartment and create vacuum for operating the train brakes.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Having two different speed settings."
      ],
      "links": [
        [
          "setting",
          "setting"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "two-speed"
}