"difference engine" meaning in English

{
  "forms": [
    {
      "form": "difference engines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "difference engine (plural difference engines)",
      "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"
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          "source": "w"
        },
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          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
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        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Hungarian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Japanese translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Korean translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Portuguese translations",
          "parents": [],
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        },
        {
          "kind": "other",
          "name": "Terms with Spanish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Swedish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A mechanical special-purpose computer used to generate tables of values of polynomials."
      ],
      "id": "en-difference_engine-en-noun--HaKH10n",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "polynomial",
          "polynomial"
        ]
      ],
      "raw_glosses": [
        "(computing, historical) A mechanical special-purpose computer used to generate tables of values of polynomials."
      ],
      "related": [
        {
          "word": "analytical engine"
        }
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "chāfēnjī",
          "sense": "computer",
          "word": "差分機 /差分机"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "computer",
          "word": "differenssikone"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "computer",
          "tags": [
            "feminine"
          ],
          "word": "Differenzmaschine"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "computer",
          "word": "differenciálgép"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "kaisa kikan",
          "sense": "computer",
          "word": "階差機関"
        },
        {
          "code": "ko",
          "lang": "Korean",
          "roman": "chabun'gigwan",
          "sense": "computer",
          "word": "차분기관"
        },
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "computer",
          "tags": [
            "feminine"
          ],
          "word": "máquina diferencial"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "computer",
          "tags": [
            "feminine"
          ],
          "word": "máquina diferencial"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "computer",
          "tags": [
            "common-gender"
          ],
          "word": "differensmaskin"
        }
      ],
      "wikipedia": [
        "difference engine"
      ]
    }
  ],
  "word": "difference engine"
}

{
  "forms": [
    {
      "form": "difference engines",
      "tags": [
        "plural"
      ]
    }
  ],
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    {
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      "expansion": "difference engine (plural difference engines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "analytical engine"
    }
  ],
  "senses": [
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        "English countable nouns",
        "English entries with incorrect language header",
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        "Japanese terms with redundant script codes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with German translations",
        "Terms with Hungarian translations",
        "Terms with Japanese translations",
        "Terms with Korean translations",
        "Terms with Mandarin translations",
        "Terms with Portuguese translations",
        "Terms with Spanish translations",
        "Terms with Swedish translations",
        "en:Computing"
      ],
      "glosses": [
        "A mechanical special-purpose computer used to generate tables of values of polynomials."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "polynomial",
          "polynomial"
        ]
      ],
      "raw_glosses": [
        "(computing, historical) A mechanical special-purpose computer used to generate tables of values of polynomials."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "difference engine"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "chāfēnjī",
      "sense": "computer",
      "word": "差分機 /差分机"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "computer",
      "word": "differenssikone"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "computer",
      "tags": [
        "feminine"
      ],
      "word": "Differenzmaschine"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "computer",
      "word": "differenciálgép"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "kaisa kikan",
      "sense": "computer",
      "word": "階差機関"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "chabun'gigwan",
      "sense": "computer",
      "word": "차분기관"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "computer",
      "tags": [
        "feminine"
      ],
      "word": "máquina diferencial"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "computer",
      "tags": [
        "feminine"
      ],
      "word": "máquina diferencial"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "computer",
      "tags": [
        "common-gender"
      ],
      "word": "differensmaskin"
    }
  ],
  "word": "difference engine"
}