"Feynman-Smoluchowski ratchet" meaning in English

{
  "etymology_text": "First analysed by Polish physicist Marian Smoluchowski, and popularised by American theoretical physicist Richard Feynman.",
  "forms": [
    {
      "form": "Feynman-Smoluchowski ratchets",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "Feynman-Smoluchowski ratchet (plural Feynman-Smoluchowski ratchets)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "source": "w"
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      "glosses": [
        "Synonym of Brownian ratchet"
      ],
      "id": "en-Feynman-Smoluchowski_ratchet-en-noun-exeQHALc",
      "links": [
        [
          "Brownian ratchet",
          "Brownian ratchet#English"
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      "synonyms": [
        {
          "tags": [
            "synonym",
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          "word": "Brownian ratchet"
        }
      ],
      "wikipedia": [
        "Marian Smoluchowski",
        "Richard Feynman"
      ]
    }
  ],
  "word": "Feynman-Smoluchowski ratchet"
}

{
  "etymology_text": "First analysed by Polish physicist Marian Smoluchowski, and popularised by American theoretical physicist Richard Feynman.",
  "forms": [
    {
      "form": "Feynman-Smoluchowski ratchets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Feynman-Smoluchowski ratchet (plural Feynman-Smoluchowski ratchets)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
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        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
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      ],
      "glosses": [
        "Synonym of Brownian ratchet"
      ],
      "links": [
        [
          "Brownian ratchet",
          "Brownian ratchet#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
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          "word": "Brownian ratchet"
        }
      ],
      "wikipedia": [
        "Marian Smoluchowski",
        "Richard Feynman"
      ]
    }
  ],
  "word": "Feynman-Smoluchowski ratchet"
}