"primus motor" meaning in English

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  "etymology_text": "From Latin, coined by Thomas Lodge.",
  "forms": [
    {
      "form": "primus motors",
      "tags": [
        "plural"
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      "expansion": "primus motor (plural primus motors)",
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  "lang_code": "en",
  "pos": "noun",
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        "Synonym of primum mobile (prime mover or first cause)."
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        "(rare) Synonym of primum mobile (prime mover or first cause)."
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          "word": "primum mobile"
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        "Thomas Lodge"
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  "word": "primus motor"
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  "etymology_text": "From Latin, coined by Thomas Lodge.",
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      "form": "primus motors",
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      "expansion": "primus motor (plural primus motors)",
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  "pos": "noun",
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        "(rare) Synonym of primum mobile (prime mover or first cause)."
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  "word": "primus motor"
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