"worm gear" meaning in English

{
  "forms": [
    {
      "form": "worm gears",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "worm gear (plural worm gears)",
      "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"
        },
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          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
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          "kind": "other",
          "name": "Pages with entries",
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        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Spanish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Welsh translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mechanics",
          "orig": "en:Mechanics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The gear in a worm drive."
      ],
      "id": "en-worm_gear-en-noun-aCNOEXv6",
      "links": [
        [
          "worm drive",
          "worm drive"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "kierukkapyörä"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "neuter"
          ],
          "word": "Schneckenzahnrad"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "ślimacznica"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "piñón tipo gusano"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "piñón de tornillo sin fin"
        },
        {
          "code": "cy",
          "lang": "Welsh",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "gêr cripian"
        }
      ],
      "wikipedia": [
        "worm gear"
      ]
    }
  ],
  "word": "worm gear"
}

{
  "forms": [
    {
      "form": "worm gears",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "worm gear (plural worm gears)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
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        "English nouns",
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        "Pages with entries",
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        "Terms with German translations",
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        "Terms with Spanish translations",
        "Terms with Welsh translations",
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      ],
      "glosses": [
        "The gear in a worm drive."
      ],
      "links": [
        [
          "worm drive",
          "worm drive"
        ]
      ],
      "wikipedia": [
        "worm gear"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "kierukkapyörä"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "neuter"
      ],
      "word": "Schneckenzahnrad"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "ślimacznica"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "piñón tipo gusano"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "piñón de tornillo sin fin"
    },
    {
      "code": "cy",
      "lang": "Welsh",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "gêr cripian"
    }
  ],
  "word": "worm gear"
}