"frostiest" meaning in English

{
  "head_templates": [
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      "args": {
        "1": "en",
        "2": "superlative adjective"
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      "expansion": "frostiest",
      "name": "head"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
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        {
          "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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      ],
      "examples": [
        {
          "ref": "1959 March, “The 2,500 h.p. electric locomotives for the Kent Coast electrification”, in Trains Illustrated, page 125",
          "text": "Whenever the locomotive was working hard there was unmistakable evidence of its higher power than its predecessors in the brilliant and explosive arcing between conductor shoes and the third rail; this was particularly vivid in Quarry Tunnel in the down direction, where the display equalled anything we have seen on the frostiest of nights in an electrified third-rail area.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most frosty",
          "word": "frosty"
        }
      ],
      "glosses": [
        "superlative form of frosty: most frosty"
      ],
      "id": "en-frostiest-en-adj-VS4SLD7r",
      "links": [
        [
          "frosty",
          "frosty#English"
        ]
      ],
      "tags": [
        "form-of",
        "superlative"
      ]
    }
  ],
  "word": "frostiest"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "superlative adjective"
      },
      "expansion": "frostiest",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English non-lemma forms",
        "English superlative adjectives",
        "English terms with quotations"
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      "examples": [
        {
          "ref": "1959 March, “The 2,500 h.p. electric locomotives for the Kent Coast electrification”, in Trains Illustrated, page 125",
          "text": "Whenever the locomotive was working hard there was unmistakable evidence of its higher power than its predecessors in the brilliant and explosive arcing between conductor shoes and the third rail; this was particularly vivid in Quarry Tunnel in the down direction, where the display equalled anything we have seen on the frostiest of nights in an electrified third-rail area.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most frosty",
          "word": "frosty"
        }
      ],
      "glosses": [
        "superlative form of frosty: most frosty"
      ],
      "links": [
        [
          "frosty",
          "frosty#English"
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      "tags": [
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  ],
  "word": "frostiest"
}