"chainwheel" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "chain",
        "3": "wheel"
      },
      "expansion": "chain + wheel",
      "name": "com"
    }
  ],
  "etymology_text": "From chain + wheel.",
  "forms": [
    {
      "form": "chainwheels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chainwheel (plural chainwheels)",
      "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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          "source": "w"
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      ],
      "glosses": [
        "Synonym of chainring (“bicycle part”)"
      ],
      "id": "en-chainwheel-en-noun-Pfp2u6IQ",
      "links": [
        [
          "chainring",
          "chainring#English"
        ]
      ],
      "synonyms": [
        {
          "extra": "bicycle part",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "chainring"
        }
      ]
    }
  ],
  "word": "chainwheel"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "chain",
        "3": "wheel"
      },
      "expansion": "chain + wheel",
      "name": "com"
    }
  ],
  "etymology_text": "From chain + wheel.",
  "forms": [
    {
      "form": "chainwheels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chainwheel (plural chainwheels)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
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      ],
      "glosses": [
        "Synonym of chainring (“bicycle part”)"
      ],
      "links": [
        [
          "chainring",
          "chainring#English"
        ]
      ],
      "synonyms": [
        {
          "extra": "bicycle part",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "chainring"
        }
      ]
    }
  ],
  "word": "chainwheel"
}