"F4" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "noun"
      },
      "expansion": "F4",
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  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Formula 4 / Formula Four; the fourth level of the FIA single seat open wheel open cockpit formula racing ladder. Unlike many Formula series, the \"4\" is not a displacement rating, in refers to a performance level below Formula One (“F1”), the third step below it. Many national formula racing series are F4-based series. The current iteration of F4 is a spec series.",
          "word": "Formula 4"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Motor racing",
          "orig": "mul:Motor racing",
          "parents": [
            "Automotive",
            "Sports",
            "Transport",
            "Human activity",
            "All topics",
            "Human behaviour",
            "Fundamental",
            "Human"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Formula 4.: Formula 4 / Formula Four; the fourth level of the FIA single seat open wheel open cockpit formula racing ladder. Unlike many Formula series, the \"4\" is not a displacement rating, in refers to a performance level below Formula One (“F1”), the third step below it. Many national formula racing series are F4-based series. The current iteration of F4 is a spec series."
      ],
      "id": "en-F4-mul-noun-0FFV3Ni0",
      "links": [
        [
          "motor racing",
          "motor racing"
        ],
        [
          "Formula",
          "formula#Translingual"
        ],
        [
          "4",
          "4#Translingual"
        ],
        [
          "Formula 4",
          "Formula 4#English"
        ],
        [
          "Formula Four",
          "Formula Four#English"
        ],
        [
          "Formula One",
          "Formula One#English"
        ],
        [
          "spec",
          "spec#English"
        ]
      ],
      "raw_glosses": [
        "(motor racing) Initialism of Formula 4.: Formula 4 / Formula Four; the fourth level of the FIA single seat open wheel open cockpit formula racing ladder. Unlike many Formula series, the \"4\" is not a displacement rating, in refers to a performance level below Formula One (“F1”), the third step below it. Many national formula racing series are F4-based series. The current iteration of F4 is a spec series."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "motor-racing",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "F4"
}

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "noun"
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      "expansion": "F4",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Formula 4 / Formula Four; the fourth level of the FIA single seat open wheel open cockpit formula racing ladder. Unlike many Formula series, the \"4\" is not a displacement rating, in refers to a performance level below Formula One (“F1”), the third step below it. Many national formula racing series are F4-based series. The current iteration of F4 is a spec series.",
          "word": "Formula 4"
        }
      ],
      "categories": [
        "Translingual entries with incorrect language header",
        "Translingual initialisms",
        "Translingual lemmas",
        "Translingual nouns",
        "Translingual terms spelled with numbers",
        "mul:Motor racing"
      ],
      "glosses": [
        "Initialism of Formula 4.: Formula 4 / Formula Four; the fourth level of the FIA single seat open wheel open cockpit formula racing ladder. Unlike many Formula series, the \"4\" is not a displacement rating, in refers to a performance level below Formula One (“F1”), the third step below it. Many national formula racing series are F4-based series. The current iteration of F4 is a spec series."
      ],
      "links": [
        [
          "motor racing",
          "motor racing"
        ],
        [
          "Formula",
          "formula#Translingual"
        ],
        [
          "4",
          "4#Translingual"
        ],
        [
          "Formula 4",
          "Formula 4#English"
        ],
        [
          "Formula Four",
          "Formula Four#English"
        ],
        [
          "Formula One",
          "Formula One#English"
        ],
        [
          "spec",
          "spec#English"
        ]
      ],
      "raw_glosses": [
        "(motor racing) Initialism of Formula 4.: Formula 4 / Formula Four; the fourth level of the FIA single seat open wheel open cockpit formula racing ladder. Unlike many Formula series, the \"4\" is not a displacement rating, in refers to a performance level below Formula One (“F1”), the third step below it. Many national formula racing series are F4-based series. The current iteration of F4 is a spec series."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "motor-racing",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "F4"
}